List of the Paleozoic life of Ohio

This list of the Paleozoic life of Ohio contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Ohio and are between 541 and 252.17 million years of age.

A
  • †Abylea – type locality for genus
    • †Abylea minuta – type locality for species
  • †Acacocrinus
    • †Acacocrinus anebos
  • †Acanthatia
  • †Acanthoclema
    • †Acanthoclema lineatum
    • †Acanthoclema ohioensis
    • †Acanthoclema sulcatum
  • †Acanthonema
    • †Acanthonema holopiforme
    • †Acanthonema newberryi
  • †Acanthopecten
    • †Acanthopecten bellosum – type locality for species
    • †Acanthopecten carboniferus
  • †Acanthotriletes
    • †Acanthotriletes aculeolatus
  • †Achatella
  • †Acidaspis
    • †Acidaspis cincinnatiensis
  • †Acleistoceras – tentative report
  • †Acmaeoblatta – type locality for genus
    • †Acmaeoblatta lanceolata – type locality for species
  • †Acriora
    • †Acriora petala
  • †Acteonina
    • †Acteonina hanseni – type locality for species
  • †Actinodesma
    • †Actinodesma erectum
  • †Actinopteria
    • †Actinopteria boydi
  • †Acutichiton – type locality for genus
    • †Acutichiton pyrmidalus – type locality for species
  • †Adamanterpeton – type locality for genus
    • †Adamanterpeton ohioensis – type locality for species
  • †Aechmina
    • †Aechmina richmondensis
  • †Aethaspis
  • †Agelacrinites
    • †Agelacrinites southworthi – or unidentified comparable form
  • †Agnesia
    • †Agnesia prosseri
  • †Alaionema
    • †Alaionema crenulatum
  • †Alaskozygopleura
    • †Alaskozygopleura gracillium
  • †Alatisporites
    • †Alatisporites trialatus
  • Fossilized fronds of the Carboniferous-Early Cretaceous seed fern Alethopteris
    †Alethopteris
  • †Allocryptaspis
  • †Alloiopteris
    • †Alloiopteris erosa
  • †Allonema
  • †Allonychia
  • †Allorisma
    • †Allorisma costatum
  • †Alveolites
    • †Alveolites labechii
  • †Ambedus – type locality for genus
    • †Ambedus pusilus – type locality for species
  • †Ambocoelia
    • †Ambocoelia norwoodi
    • †Ambocoelia umbonata
  • †Ambonychia
    • †Ambonychia alata
    • †Ambonychia cultrata
    • †Ambonychia richmondensis
    • †Ambonychia suberecta
  • †Ambozone
    • †Ambozone peoriensis – or unidentified comparable form
  • †Ametroblatta
    • †Ametroblatta strigosa – type locality for species
  • †Ameura
    • †Ameura missouriensis
  • †Ammonidium
    • †Ammonidium hamatum
  • †Amphilichas
  • †Amphiscapha
    • †Amphiscapha catilloides
    • †Amphiscapha reedsi
  • Fossils of the Ordovician-Permian bryozoan Amplexopora
    †Amplexopora
    • †Amplexopora pustulosa
    • †Amplexopora robusta
  • †Anaptychus – tentative report
    • †Anaptychus emersoni
  • †Anartiocystis
    • †Anartiocystis foerstei
  • †Anaspyroceras
  • †Ancienta
    • †Ancienta ohioensis
  • Fossil of the Carboniferous horsetail relative Annularia
    †Annularia
    • †Annularia asteris
    • †Annularia radiata
    • †Annularia sphenophylloides
    • †Annularia stellata
  • †Anomalocrinus
  • †Anomalodonta
    • †Anomalodonta costata
  • †Anomalotoechus
    • †Anomalotoechus tuberatus
  • †Anostylostroma
    • †Anostylostroma columnare
    • †Anostylostroma laxum
  • †Anozyga – type locality for genus
    • †Anozyga bulla – type locality for species
  • †Anthracodromeus
    • †Anthracodromeus longipes – type locality for species
  • †Anthracopupa – type locality for genus
    • †Anthracopupa ohioensis – type locality for species
  • Restoration of the face of the Carboniferous reptiliomorph Anthracosaurus
    †Anthracosaurus
    • †Anthracosaurus lancifer – type locality for species
  • †Antiquaster
    • †Antiquaster magrumi
  • †Antiquatonia
    • †Antiquatonia costata
    • †Antiquatonia portlockianus
  • †Aparchites
    • †Aparchites minutissimus
    • †Aparchites oblongus
  • †Aphelakardia
    • †Aphelakardia alternistriata
  • †Aphlebia
  • †Apiculatasporites
    • †Apiculatasporites acueatus
    • †Apiculatasporites latigranifer
    • †Apiculatasporites saetiger
    • †Apiculatasporites setulosus
  • †Arabellites
  • Life restoration of the Carboniferous synapsid (mammal precursor) Archaeothyris
    †Archaeothyris
  • †Archegogryllus – type locality for genus
    • †Archegogryllus priscus – type locality for species
  • †Archinacella
    • †Archinacella rugatina
  • †Arcochiton – type locality for genus
    • †Arcochiton raymondi – type locality for species
  • Fossil of the Silurian trilobite Arctinurus
    †Arctinurus
  • †Arjamannia
    • †Arjamannia inexpectans
  • †Armenoceras
  • †Arthraria
    • †Arthraria biclavata
  • †Arthroacantha
    • †Arthroacantha carpenteri
  • †Arthropitys
  • Arthropoma
    • †Arthropoma shafferi
  • †Arthrostylus
  • †Artisia
  • †Ascodictyon
    • †Ascodictyon fusiforme
  • †Asolanus
    • †Asolanus camptotaenia
    • †Asolanus sigillarioides
  • †Aspidopora
    • †Aspidopora newberryi
  • †Astartella
    • †Astartella clinata – type locality for species
    • †Astartella concentrica
    • †Astartella varica
    • †Astartella vera
  • †Asterotheca
  • †Atactoblatta – type locality for genus
    • †Atactoblatta anomala – type locality for species
  • †Atactoechus
    • †Atactoechus typicus – or unidentified comparable form
  • †Atactopora
  • †Atactoporella
  • †Ateleocystites
  • †Athyris
    • †Athyris vittata
  • †Atraktoprion
  • †Atrypa
    • Fossilized shell of the Silurian-Late Devonian brachiopod Atrypa reticularis
      †Atrypa reticularis
    • †Atrypa reticularus – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Augustoceras
  • †Aulacella
  • †Aulacera
    • †Aulacera nodulosa
  • †Aulocystis
    • †Aulocystis auloporoidea
    • †Aulocystis auloporoides
    • †Aulocystis flabellata
    • †Aulocystis jacksoni
    • †Aulocystis lucasensis
  • †Aulopora
    • †Aulopora microbuccinata
    • †Aulopora serpens
  • †Austinella
    • †Austinella scovellei
  • Mold fossil found near Wooster of a shell of the Early Devonian-Late Triassic bivalve Aviculopecten
    †Aviculopecten
    • †Aviculopecten appalachianus – type locality for species
    • †Aviculopecten columbianus – type locality for species
    • †Aviculopecten coxanus
    • †Aviculopecten fasciculatus
    • †Aviculopecten occidentalis
    • †Aviculopecten princeps
    • †Aviculopecten winchelli
  • †Aviculopinna
    • †Aviculopinna peracuta

B
  • †Bactrites – tentative report
    • †Bactrites arkonensis – or unidentified comparable form
  • Bairdia
    • †Bairdia devonica
  • †Balbiniconcha
    • †Balbiniconcha hebe
  • †Baldwinonus
    • †Baldwinonus dunkardensis
  • †Barathrisphaeridium
    • †Barathrisphaeridium chagrinense
    • †Barathrisphaeridium pumilispinosum
  • †Barbclabornia
    • †Barbclabornia luedersensis
  • †Barychilina
  • †Batostoma
    • †Batostoma varians
  • †Batostomella
    • †Batostomella gracilis
    • †Batostomella striata
  • †Baylea
    • †Baylea giffordi – or unidentified comparable form
    • †Baylea inclinata – type locality for species
  • †Beatricea
    • †Beatricea undulata
  • Fossilized shell of the Silurian-Early Triassic mollusc Bellerophon
    †Bellerophon
    • †Bellerophon hyalina
    • †Bellerophon jeffersonensis
    • †Bellerophon newberryi
    • †Bellerophon pelops
    • †Bellerophon spergensis
    • †Bellerophon stevensianus
    • †Bellerophon stummi – type locality for species
    • †Bellerophon whittleseyi – type locality for species
  • †Belodella
  • †Beloitoceras
    • †Beloitoceras amoenum
  • †Bembexia
    • †Bembexia adjutor – type locality for species
    • †Bembexia insolita
  • Berenicea
  • †Bethanyphyllum
    • †Bethanyphyllum robustum
  • †Bicarina
    • †Bicarina petilitornata
  • †Bickmorites
  • †Bikocrinus
    • †Bikocrinus baios
  • †Billingsastraea
    • †Billingsastraea longicarinata
  • †Billingsastrea
    • †Billingsastrea longicarinata
  • †Blattinopsis
    • †Blattinopsis americana – type locality for species
    • †Blattinopsis anthracina – type locality for species
    • †Blattinopsis latipennis – type locality for species
  • †Bodmania
  • †Bollia
    • †Bollia persulcata
    • †Bollia regularis
  • †Botryllopora
    • †Botryllopora socialis
  • †Botryocrinus
    • †Botryocrinus neimani
  • †Bowmanites
    • †Bowmanites incurvata
    • †Bowmanites magna
  • †Brachiospongia
  • Life restoration of the Carboniferous amphibian Brachydectes
    †Brachydectes – type locality for genus
    • †Brachydectes newberryi – type locality for species
  • †Brockocystis
    • †Brockocystis nodosaria
  • †Broiliellus
    • †Broiliellus hektotopos – type locality for species
  • †Bucanella
  • †Bucania
    • †Bucania crassa
  • †Bucanopsis
  • †Buthotrephis
    • †Buthotrephis gracilis
  • †Byssonychia
    • †Byssonychia grandis
    • †Byssonychia radiata
  • Bythocypris
    • †Bythocypris cylindrica
    • †Bythocypris punctatus
  • †Bythopora
    • †Bythopora delicatula
    • †Bythopora striata

C
  • Fossilized stems from the Carboniferous-Permian horsetail relative Calamites
    †Calamites
    • †Calamites carinatus
    • †Calamites cisti
    • †Calamites citiifromis
    • †Calamites sachsi
    • †Calamites schützeiformis
    • †Calamites suckowi
    • †Calamites suckowii
    • †Calamites undulatus
  • †Calamospora
    • †Calamospora breviradiata
    • †Calamospora hartungiana
    • †Calamospora straminea
  • †Calamostachys
    • †Calamostachys bisporangiata – type locality for species
    • †Calamostachys germanica
    • †Calamostachys interculata – type locality for species
    • †Calamostachys longibracteata – type locality for species
    • †Calamostachys minuta – type locality for species
    • †Calamostachys recurvata – type locality for species
    • †Calamostachys tuberculata
  • †Calapoecia
  • †Calceocrinus
    • †Calceocrinus incertus
  • †Callipleura
    • †Callipleura nobilis – or unidentified comparable form
  • A polished round of the permineralised Late Devonian-Carboniferous wood Callixylon
    †Callixylon
    • †Callixylon clevelandensis
    • †Callixylon newberryi
  • †Calloporella
  • †Calostylis – tentative report
    • †Calostylis lindstroemi
  • †Calvibembexia
    • †Calvibembexia sulcomarginata
  • †Camarotoechia
    • †Camarotoechia semiplicata
  • Restoration of the Middle Ordovician-Silurian nautiloid cephalopod Cameroceras feeding on an Aphetoceras, while a quartet of Cyclostomiceras swim by
    †Cameroceras
  • †Cardiocarpon
  • †Cardiomorpha
    • †Cardiomorpha missouriensis
  • †Carneyella
    • †Carneyella foerstei
  • †Caryocrinites
  • †Catazone
    • †Catazone eversolensis – type locality for species
  • †Catazyga
    • †Catazyga headi
  • Fossil of the Ordovician-Silurian tabulate coral Catenipora
    †Catenipora
    • †Catenipora favositomima
    • †Catenipora favositomina
    • †Catenipora gotlandica
  • †Caulopteris
    • †Caulopteris antiqua
    • †Caulopteris peregrina
  • †Cayugaea
    • †Cayugaea intermittens
    • †Cayugaea transitorius – tentative report
  • †Centroceras
  • †Centrorhynchus
  • †Ceramoporella
    • †Ceramoporella granulosa
    • †Ceramoporella ohioensis
  • †Ceratocephala
  • †Ceratoikiscum
    • †Ceratoikiscum bujugum
    • †Ceratoikiscum spinosiarcuatum
  • †Ceratoikiscump
    • †Ceratoikiscump erittacanthinum
    • †Ceratoikiscump lanistellare
  • †Ceratopsis
    • †Ceratopsis chambersi
    • †Ceratopsis oculifera
  • †Ceraurinus
    • †Ceraurinus icarus
  • †Ceraurus
  • †Chaenomya
    • †Chaenomya leavenworthensis
  • †Chagrinia
  • †Chagrinichnites
  • †Charactoceras
  • †Chasmatopora
  • Fossil of the Late Ordovician trilobite Chasmops
    †Chasmops
  • †Chaunograptus
  • †Chiloporella
  • †Chlidochirus
    • †Chlidochirus springeri
  • †Chondrites
  • †Chonetes
    • †Chonetes aurora – tentative report
    • †Chonetes deflectus
    • †Chonetes minutus
    • †Chonetes mucronatus – tentative report
  • †Chonetina
    • †Chonetina choteauensis
  • †Chonetinella
    • †Chonetinella flemingi
    • †Chonetinella verneuilana
    • †Chonetinella verneuiliana
  • †Cincinnaticrinus
  • †Cincinnatidiscus
  • Assemblage of fossilized shells found in southern Ohio of the Ordovician brachiopod Cincinnetina
    †Cincinnetina
    • †Cincinnetina meeki
    • †Cincinnetina multisecta
  • †Cirratriradites
    • †Cirratriradites annulatus
  • †Cladochonus
  • †Cladopora
    • †Cladopora bifurcata
    • †Cladopora crassa
    • †Cladopora lucasensis
    • †Cladopora minuitissima
    • †Cladopora roemeri
  • Fossil found in Ohio of the Late Devonian shark Cladoselache
    †Cladoselache
    • †Cladoselache clarki
  • †Clarkesvillia
  • †Clathrodictyon
    • †Clathrodictyon confertum
  • †Clathrospira
  • †Claudeonychia – type locality for genus
    • †Claudeonychia babini – type locality for species
  • †Cleionychia
  • †Clemetaocrinus
    • †Clemetaocrinus ohioensis
  • †Clevelandodendron
    • †Clevelandodendron ohioensis
  • Assemblage of fossils of the Cambrian graptolite Climacograptus
    †Climacograptus
  • †Clinopistha
    • †Clinopistha radiata
  • †Coelocaulus
    • †Coelocaulus desiderata
    • †Coelocaulus strebloceras – tentative report
  • †Coeloclema
    • †Coeloclema oweni
  • †Coenites
  • †Coleolus
    • †Coleolus iowensis
  • Life restoration of the Carboniferous tetrapodomorph Colosteus
    †Colosteus
    • †Colosteus scutellatus – type locality for species
  • †Columnaria
    • †Columnaria calicina
  • †Comasphaeridium
    • †Comasphaeridium caesariatum
  • †Composita
    • †Composita subtilita
  • †Compsocrinus
    • †Compsocrinus harrisi
  • †Conchidium
  • †Conradidium
    • †Conradidium firmamentum
  • †Constellaria
  • †Conularia
    • †Conularia formosa
  • †Convolutispora
    • †Convolutispora mellita
  • †Cordaianthus
  • †Cordaites
    • †Cordaites principalis – or unidentified comparable form
  • †Cornellites
    • †Cornellites flabellum
  • Fossil of the Middle Ordovician-Carboniferous horn coral Cornulites
    †Cornulites
    • †Cornulites flexuosus
  • †Corocrinus
    • †Corocrinus noduosus
  • †Corynotrypa
    • †Corynotrypa delicatula
    • †Corynotrypa inflata
  • †Corythoecia
    • †Corythoecia dichoptera
  • †Costatulites
    • †Costatulites richmondensis
  • †Cranaena
    • †Cranaena romingeri
  • Craniella
    • †Craniella hamiltonae
  • †Crassisphaeridium
    • †Crassisphaeridium inusitatum
  • †Crassispora
    • †Crassispora kosankei
  • †Crenistriella
    • †Crenistriella rotalinea
  • †Crenulazona
    • †Crenulazona angulata
  • †Crepipora
  • †Crurithyris
    • †Crurithyris planoconvexa
  • †Cryptolithus
    • †Cryptolithus tesselata
  • †Ctenacanthus
    • †Ctenacanthus compressus
  • †Ctenerpeton
    • †Ctenerpeton remex – type locality for species
  • †Ctenobolbina
    • †Ctenobolbina ciliata
    • †Ctenobolbina duryi
    • †Ctenobolbina hammeli
  • †Ctenodonta
    • †Ctenodonta madisonensis
    • †Ctenodonta recurva
  • Restoration of the Permian synapsid (mammal precursor) Ctenospondylus
    †Ctenospondylus
    • †Ctenospondylus ninevehensis
  • †Cuffeyella
    • †Cuffeyella arachnoidea
  • †Cunctocrinus
    • †Cunctocrinus fortunatus – type locality for species
  • †Cuneamya
    • †Cuneamya elliptica
    • †Cuneamya miamiensis
    • †Cuneamya scapha
  • †Cupularostrum
    • †Cupularostrum prolificum
  • †Cupulocrinus
  • †Cycloconcha
  • †Cyclocystoides
  • †Cyclogranisporites
    • †Cyclogranisporites microgranus
    • †Cyclogranisporites minutus
    • †Cyclogranisporites obliquus
    • †Cyclogranisporites orbicularis
  • †Cyclonema
    • †Cyclonema bilix
    • †Cyclonema gyronemoides
    • †Cyclonema humerosum
    • †Cyclonema minuta
  • Fossilized foliage from the Carboniferous seed fern Cyclopteris
    †Cyclopteris
    • †Cyclopteris orbicularis
    • †Cyclopteris trichomanoides
  • †Cyclora
    • †Cyclora depressa
    • †Cyclora hoffmani
    • †Cyclora parvula
    • †Cyclora pulcella
  • †Cyclozyga
    • †Cyclozyga attenuata – type locality for species
    • †Cyclozyga mirabilis
  • †Cylindrocoelia
  • †Cylindrophyllum
    • †Cylindrophyllum delicatulum
    • †Cylindrophyllum delicatum
    • †Cylindrophyllum profundum
  • †Cymatiosphaera
    • †Cymatiosphaera acinosa
    • †Cymatiosphaera adaiochorata
    • †Cymatiosphaera brevicrista
    • †Cymatiosphaera daioariochora
    • †Cymatiosphaera labyrinthica
    • †Cymatiosphaera parvicarina
    • †Cymatiosphaera rhacoamba
    • †Cymatiosphaera velicarina
  • †Cymatonota
    • †Cymatonota constricta
    • †Cymatonota cylindrica
    • †Cymatonota parallela
    • †Cymatonota recta
    • †Cymatonota semistriata
  • †Cymatospira
    • †Cymatospira alternodosa – type locality for species
    • †Cymatospira montfortianus
  • †Cyperites
  • †Cyphotrypa
    • †Cyphotrypa clarksvillensis
  • †Cypricardinia
    • †Cypricardinia indenta
  • Cypridina
    • †Cypridina herzeri
  • †Cyrtentactinia
    • †Cyrtentactinia cibdelosphaera
    • †Cyrtentactinia primotica
  • †Cyrtina
    • †Cyrtina alpenensis
    • †Cyrtina hamiltonensis
    • †Cyrtina umbonata
  • †Cyrtocerina
  • †Cyrtodonta
    • †Cyrtodonta halli
  • †Cyrtodontula
  • †Cyrtolites
    • †Cyrtolites claysferryensis
    • †Cyrtolites inornatum
    • †Cyrtolites ornatus
    • †Cyrtolites retrorsus
  • †Cyrtospira
    • †Cyrtospira directus
  • Fossilized shells of the Middle-Late Devonian brachiopod Cyrtospirifer
    †Cyrtospirifer
  • †Cystaster
  • †Cystiphylloides
    • †Cystiphylloides americanum
  • †Cystodictya
    • †Cystodictya hamiltonensis
    • †Cystodictya incisurata
  • Cythere
    • †Cythere ohioensis
  • Cytherella
    • †Cytherella unioniformis

D
  • †Dalmanella
  • †Danaeites
    • †Danaeites emersonii
  • Fossilized calyx of the Carboniferous crinoid ("sea lily") Decadocrinus
    †Decadocrinus
    • †Decadocrinus hughwingi
    • †Decadocrinus stewartae
    • †Decadocrinus wrightae
  • †Deceptrix
    • †Deceptrix albertina
  • †Dechenella
    • †Dechenella alpenensis
    • †Dechenella lucasensis
  • †Dekayella
  • †Dekayia
  • †Deltodus
  • †Deltoidospora
    • †Deltoidospora levis
    • †Deltoidospora priddyi
  • †Denayella
    • †Denayella rotalia
  • †Dendrocrinus
    • †Dendrocrinus daytonensis
  • †Derbyia
    • †Derbyia crassa
  • †Dermatostroma
    • †Dermatostroma scabrum
  • †Desmoinesia
    • †Desmoinesia muricatina
  • †Devonalosia
    • †Devonalosia wrightorum
  • †Devonochonetes
    • †Devonochonetes coronatus
    • †Devonochonetes fragilis
    • †Devonochonetes scitulus
  • †Devonorhineoderma
    • †Devonorhineoderma hyphantes
  • †Diaphorochroa
    • †Diaphorochroa ganglia
  • †Dicalamophyllum
  • Life restoration of the Carboniferous amphibian Diceratosaurus
    †Diceratosaurus
    • †Diceratosaurus brevirostris – type locality for species
  • †Dicranopora
    • †Dicranopora emacerata
  • †Dictyoclostus
    • †Dictyoclostus semireticulatus
  • †Dictyonema
  • †Dictyotomaria
    • †Dictyotomaria capillaria
    • †Dictyotomaria scitula – or unidentified comparable form
  • †Diestoceras
    • †Diestoceras eos
    • †Diestoceras indianense
    • †Diestoceras shideleri
  • †Diexallophasis
    • †Diexallophasis absona
    • †Diexallophasis cuspidis
  • †Dinichthys
    • †Dinichthys herzeri
  • †Dinophyllum
    • †Dinophyllum semilunum
    • †Dinophyllum stokesi
  • †Dinorthis
    • †Dinorthis carleyi
  • †Diphyphyllum
  • Life restoration of a swimming group of the Permian amphibian Diploceraspis
    †Diploceraspis
  • †Diplograptus
    • †Diplograptus recurrens
  • Discina
  • †Discotrypa
  • †Dithyrocaris
    • †Dithyrocaris neptuni – or unidentified comparable form
  • †Ditomopyge
    • †Ditomopyge decurtata
    • †Ditomopyge scitula
  • †Divietipellis
    • †Divietipellis robusta
  • Life restoration of the Silurian eurypterid ("sea scorpion") Dolichopterus
    †Dolichopterus
    • †Dolichopterus asperatus
  • †Donaldiella
  • †Donaldina
    • †Donaldina bellilineata – or unidentified comparable form
    • †Donaldina pygmaea – tentative report
    • †Donaldina robusta – type locality for species
    • †Donaldina stevensana – type locality for species
  • †Dorsennidium
    • †Dorsennidium patulum
  • †Doryblatta – type locality for genus
    • †Doryblatta longipennis – type locality for species
  • †Douvillina
    • †Douvillina distans
  • †Drepanella
    • †Drepanella richardsoni
  • †Drepanoistodus
  • †Drymocrinus
    • †Drymocrinus geniculatus
  • †Dunbarella
    • †Dunbarella knighti – or unidentified comparable form
    • †Dunbarella striata
  • Life restoration of the Late Devonian placoderm fish Dunkleosteus
    †Dunkleosteus
    • †Dunkleosteus raveri – type locality for species
  • †Dvorakia
  • †Dystactocrinus
    • †Dystactocrinus constrictus
  • †Dystactospongia

E
  • †Ecclimadictyon
  • †Ecdyceras
    • †Ecdyceras foerstei
  • †Echinocaris
    • †Echinocaris multinodosa
    • †Echinocaris multispinosis
    • †Echinocaris ohioensis – type locality for species
    • †Echinocaris pulchra – type locality for species
    • †Echinocaris punctata
    • †Echinocaris sublevis
  • †Echinocoelia
  • †Echinoconchus
    • †Echinoconchus punctatus
  • †Echinolichas
    • †Echinolichas lucasensis
  • †Ecmelostoiba
    • †Ecmelostoiba asymmetrica
    • †Ecmelostoiba leptoderma
  • †Economolopsis
    • †Economolopsis anodontoides
  • †Ectenocrinus
    • †Ectenocrinus simplex
  • †Ecthymabrachion
    • †Ecthymabrachion camptos
  • †Edmondia
    • †Edmondia aspenwallensis
    • †Edmondia aspinwallensis
    • †Edmondia nebrascensis
    • †Edmondia nodulifera – type locality for species
  • †Edon
    • †Edon oblonga
  • †Elasmonema
    • †Elasmonema bellatula
    • †Elasmonema clarki
    • †Elasmonema corrugata – type locality for species
    • †Elasmonema imitator
    • †Elasmonema lichas
  • Fossil found near Sylvania of the Middle-Late Devonian trilobite Eldredgeops
    †Eldredgeops
    • †Eldredgeops rana
  • †Elegantilites – tentative report
  • †Elektoriskos
    • †Elektoriskos apodasmios
    • †Elektoriskos arcetotricus
    • †Elektoriskos lasios
  • †Eliasopora
    • †Eliasopora stellatum
  • †Elita
  • †Elpe
    • †Elpe cincinnatiensis
    • †Elpe irregularis
    • †Elpe ulrichi
  • †Elrodoceras
  • †Emmonsia
    • †Emmonsia arbuscula
    • †Emmonsia radiciformis
  • †Endelocrinus
    • †Endelocrinus kieri – type locality for species
  • Fossilized shells and restored appearances of the Middle-Late Ordovician nautiloid cephalopod Endoceras
    †Endoceras
  • †Endosporites
    • †Endosporites globiformis
    • †Endosporites plicatus
    • †Endosporites zonalis
  • †Endothyra
    • †Endothyra kennethi
  • †Endothyranella
    • †Endothyranella inflata
    • †Endothyranella intermissa
    • †Endothyranella minuta – or unidentified comparable form
    • †Endothyranella nitida – or unidentified comparable form
    • †Endothyranella stormi – or unidentified comparable form
  • †Entactinia
    • †Entactinia additiva
    • †Entactinia cometes
    • †Entactinia crustescens
    • †Entactinia exilispina
    • †Entactinia herculea
    • †Entactinia micula
    • †Entactinia monalloea
    • †Entactinia pantosompha
    • †Entactinia paula
    • †Entactinia quantilla
    • †Entactinia somphorhips
    • †Entactinia spongites
    • †Entactinia sychnacanthina
  • †Entactinosphaera
    • †Entactinosphaera diplostraca
    • †Entactinosphaera dystactotata
    • †Entactinosphaera echinata – tentative report
    • †Entactinosphaera erebenna
    • †Entactinosphaera esostrongyla
    • †Entactinosphaera euthlasta
    • †Entactinosphaera fredericki
    • †Entactinosphaera hapala
    • †Entactinosphaera hystricosa
    • †Entactinosphaera inusitata
    • †Entactinosphaera polyacanthina
    • †Entactinosphaera riedeli
    • †Entactinosphaera symphypora
    • †Entactinosphaera tretactinia
    • †Entactinosphaera variacanthina
  • †Entactinosphaerap
    • †Entactinosphaerap alimbola
  • †Enteletes
    • †Enteletes hemiplicata
  • †Eochonetes
    • †Eochonetes clarksvillensis
    • †Eochonetes clarkvillensis
  • †Eomarginifera
    • †Eomarginifera longispinus
  • †Eomyelodactylus
    • †Eomyelodactylus rotundatus
  • †Eomylodactylus
    • †Eomylodactylus rotundatus
  • †Eotrophina
  • †Ephelopalla
    • †Ephelopalla elongata
    • †Ephelopalla talea
  • Life restoration of the Silurian-Early Devonian eurypterid ("sea scorpion") Erettopterus
    †Erettopterus
    • †Erettopterus saetiger
  • †Eridoconcha
    • †Eridoconcha rugosa
  • †Eridorthis
  • †Eridotrypa
  • †Erisocrinus
    • †Erisocrinus typus
  • †Erpetosaurus
    • †Erpetosaurus radiatus – type locality for species
  • †Escharopora
  • †Estiastra
    • †Estiastra culcita
    • †Estiastra dilatostella
    • †Estiastra rugosa
  • Fossilized holdfast found in Ohio of the Silurian-Middle Devonian crinoid ("sea lily") Eucalyptocrinites
    †Eucalyptocrinites
  • †Euchondria
    • †Euchondria neglecta
    • †Euchondria ohioensis – type locality for species
    • †Euchondria pellucida
  • †Euconospira
    • †Euconospira turbiniformis
  • †Eunicites
  • †Euomphalus
    • †Euomphalus planodorsatus
    • †Euomphalus similis
  • †Euphemites
    • †Euphemites carbonarius
    • †Euphemites enodis – type locality for species
    • †Euphemites multiliratus – type locality for species
    • †Euphemites nodocarinatus
    • †Euphemites subglobosus
    • †Euphemites vittatus
  • †Eurymya
  • †Euryocrinus – tentative report
    • †Euryocrinus laddii
  • Life restoration of Silurian eurypterid ("sea scorpion") Eurypterus
    †Eurypterus
    • †Eurypterus ornatus
  • †Eusauropleura – type locality for genus
    • †Eusauropleura digitata – type locality for species
  • †Eutaxocrinus
    • †Eutaxocrinus wideneri
  • †Evenkiella
  • †Exilisphaeridium
    • †Exilisphaeridium simplex
  • †Exochoderma
    • †Exochoderma irregulare
    • †Exochoderma ramibrachium

F
  • †Faberia
    • †Faberia anomala
  • †Faberoceras
  • †Favistella
  • Fossil of the Late Ordovician-Permian tabulate coral Favosites
    †Favosites
    • †Favosites dentistabulatus
    • †Favosites discoideus
    • †Favosites favosus
    • †Favosites hamiltonae
    • †Favosites hamiltoniae
    • †Favosites hisingeri
    • †Favosites turbinatus
  • †Fayettoceras
  • †Fenestella
    • †Fenestella shumardi
  • †Fenestrellina
    • †Fenestrellina rockportensis
  • †Fistulipora
    • †Fistulipora vesiculata
  • Front (left) and right side (right) views of an enrolled fossil of the Middle Ordovician-Silurian trilobite Flexicalymene
    †Flexicalymene
    • †Flexicalymene meeki
  • †Florinites
    • †Florinites florini
    • †Florinites mediapudens
    • †Florinites milloti
    • †Florinites similis
    • †Florinites visendus
  • †Foerstia
    • †Foerstia ohioensis
  • †Fusispira
  • Assemblage of fossils of Silurian-Permian fusulinid foraminiferans
    †Fusulina
    • †Fusulina secalica

0 Links

G
  • †Gamizyga
    • †Gamizyga corpulentissima
    • †Gamizyga girtyi – type locality for species
    • †Gamizyga morningstarae
  • †Gerablattina
    • †Gerablattina richmondiana – type locality for species
  • †Gigantopteris – or unidentified comparable form
  • Fossilized calyx and partial stem of the Devonian-Carboniferous crinoid ("sea lily") Gilbertsocrinus
    †Gilbertsocrinus
    • †Gilbertsocrinus alpenensis
    • †Gilbertsocrinus ohioensis
  • †Gillespieisporites
    • †Gillespieisporites venustus
  • †Girtyspira
    • †Girtyspira minuta
  • †Glabrocingulum
    • †Glabrocingulum beedei – type locality for species
    • †Glabrocingulum grayvillense
    • †Glabrocingulum stellaeformis
    • †Glabrocingulum wannense – or unidentified comparable form
  • †Globodoma
    • †Globodoma nodosa
  • †Globozyga
    • †Globozyga reticulata
    • †Globozyga subcorpulenta – type locality for species
  • †Glossites
    • †Glossites subtenuis
  • †Glyptocardia
    • †Glyptocardia speciosa
  • Assemblage of fossils of the Middle Ordovician-Silurian crinoid ("sea lily") Glyptocrinus
    †Glyptocrinus
    • †Glyptocrinus richardsoni
  • †Glyptorthis
    • †Glyptorthis daytonensis – type locality for species
    • †Glyptorthis fausta – type locality for species
    • †Glyptorthis insculpta
  • †Gomphostrobus
  • †Goniasma
    • †Goniasma lasallense – or unidentified comparable form
  • †Gonioloboceras
  • †Gorbyoceras
  • †Gorogonisphaeridium
    • †Gorogonisphaeridium absitum
    • †Gorogonisphaeridium elongatum
    • †Gorogonisphaeridium evexispinosum
    • †Gorogonisphaeridium ohioense
    • †Gorogonisphaeridium plerispinosum
    • †Gorogonisphaeridium separatum
  • †Gosseletia
    • †Gosseletia triquetra
  • †Gosselettia
    • †Gosselettia triquetra
  • †Graciloceras
  • †Grammysia
    • †Grammysia arcuata
    • †Grammysia bellatula
    • †Grammysia bisulcata
    • †Grammysia constricta
    • †Grammysia nodocostata
    • †Grammysia sylvanensis
  • †Grammysioidea
  • †Granasporites
    • †Granasporites medius
  • †Granulatisporites
    • †Granulatisporites granulatus
    • †Granulatisporites minutus
    • †Granulatisporites parvus
    • †Granulatisporites piroformis
  • †Graptodictya
    • †Graptodictya perelegans
  • Multiple views of a fossil of the Ordovician horn coral Grewingkia
    †Grewingkia
    • †Grewingkia rusticum
  • †Guttatisphaeridium
    • †Guttatisphaeridium pandum
  • †Gypidula

H
  • †Habrostroma
    • †Habrostroma beachvillensis
    • †Habrostroma larocquei
    • †Habrostroma marpleae
  • †Hallinetes
    • †Hallinetes setigera
  • Fossil of the Ordovician bryozoan ("moss animal") Hallopora
    †Hallopora
    • †Hallopora bassleri
    • †Hallopora flabellaris
    • †Hallopora libana
    • †Hallopora nicklesi
    • †Hallopora subnodosa
  • †Halysites
    • †Halysites catenularis
    • †Halysites catenularius
    • †Halysites nitidus
  • †Hamiltonella
    • †Hamiltonella punctulifera
  • †Haplentactinia
    • †Haplentactinia arrhinia
    • †Haplentactinia rhinophyusa
  • †Hawletrochus
    • †Hawletrochus macrostomus
  • †Hebertella
    • †Hebertella alveata
    • †Hebertella occidentalis
    • †Hebertella sinuata
    • †Hebertella subjugata
  • †Hebertocaris
    • †Hebertocaris wideneri
  • †Hederella
    • †Hederella alpenensis
    • †Hederella bilineata
    • †Hederella cirrhosa
    • †Hederella concinnoides
    • †Hederella delicatula
    • †Hederella filiformis
    • †Hederella magna
    • †Hederella parvirugosa
    • †Hederella rectifurcata
    • †Hederella reimanni
    • †Hederella thedfordensis
    • †Hederella vagans
  • †Helcionopsis
  • †Helicelasma
    • †Helicelasma rusticum
  • †Helicotoma
  • †Heliolites
  • Fossil of the Middle Devonian horn coral Heliophyllum
    †Heliophyllum
    • †Heliophyllum bathycalyx
    • †Heliophyllum halli
    • †Heliophyllum microcarinatum
  • †Helminthochiton
    • †Helminthochiton simplex
  • †Helminthozyga
    • †Helminthozyga costellata – type locality for species
    • †Helminthozyga undulata – type locality for species
  • †Helopora
    • †Helopora inexpectata
  • †Hemicystites
  • †Hemiphragma
  • †Hemizyga
    • †Hemizyga attenuata
    • †Hemizyga elegans – or unidentified comparable form
    • †Hemizyga illineata – or unidentified comparable form
  • †Heracloceras – tentative report
    • †Heracloceras inelegans – tentative report
  • †Hercostrophia
    • †Hercostrophia robusta
  • †Heslerodus
    • †Heslerodus divergens
  • †Hessonia
    • †Hessonia priscus
  • †Heterocrinus
    • †Heterocrinus exiguus
    • †Heterocrinus exilis
    • †Heterocrinus heterodactylus
    • †Heterocrinus juvenis
    • †Heterocrinus pentagonus
  • †Heteronema – tentative report
  • †Heterophrentis
    • †Heterophrentis simplex
  • †Heterorthina
    • †Heterorthina fairmountensis
  • †Heterotrypa
  • Fossil of the Devonian colonial rugose coral Hexagonaria, also known as a Petoskey stone
    †Hexagonaria
    • †Hexagonaria anna
    • †Hexagonaria stewartae
    • †Hexagonaria tabulata
    • †Hexagonaria truncata
  • †Hexameroceras
  • †Hindella
  • †Hindia
  • †Hippocardia
    • †Hippocardia herricki – type locality for species
    • †Hippocardia hydei – type locality for species
    • †Hippocardia monroica
    • †Hippocardia ohioense
  • †Hiscobeccus
    • †Hiscobeccus capax
  • †Hoareicardia
    • †Hoareicardia cunea
  • †Holoeciscus
    • †Holoeciscus auceps
  • Fossilized shells of the Ordovician-Carboniferous sea snail Holopea
    †Holopea
  • †Holoptychus – or unidentified comparable form
  • †Holtedahlina
    • †Holtedahlina sulcata
  • †Homotrypa
    • †Homotrypa wortheni
  • †Homotrypella
    • †Homotrypella dubia
  • †Hormotoma
    • †Hormotoma centervillensis – type locality for species
  • †Hormotomina
    • †Hormotomina maia
  • †Hudsonaster
    • †Hudsonaster incomptus
  • †Hustedia
    • †Hustedia mormoni
  • †Hyattidina
  • Fossilized shells of the Cambrian-Permian brachiopod relative Hyolitha
    †Hyolithes
    • †Hyolithes dubius
    • †Hyolithes parviusculus
    • †Hyolithes versaillensis
  • †Hypergonia
    • †Hypergonia jonathanensis – type locality for species
  • †Hyperoblastus
    • †Hyperoblastus reimanni
  • †Hyphantozyga
    • †Hyphantozyga cancellata – type locality for species
    • †Hyphantozyga fusiforma – type locality for species
    • †Hyphantozyga gracilis
    • †Hyphantozyga grandis – type locality for species
    • †Hyphantozyga knighti
    • †Hyphantozyga perattenuata
    • †Hyphantozyga pulchra
    • †Hyphantozyga textilis – type locality for species
  • †Hypselentoma
    • †Hypselentoma inornata
  • †Hystriculina
    • †Hystriculina wabashensis

I
  • †Ianthinopsis
    • †Ianthinopsis melanoides – type locality for species
  • †Ibanocrinus
    • †Ibanocrinus petalos
  • †Ichthyerpeton
    • †Ichthyerpeton squamosum – type locality for species
  • †Icriodus
    • †Icriodus angustus
    • †Icriodus arkonensis
    • †Icriodus brevis
    • †Icriodus eriensis
    • †Icriodus excavatus
    • †Icriodus expansus
    • †Icriodus janeae
    • †Icriodus lindensis
    • †Icriodus obliquimarginatus
    • †Icriodus ohioensis
    • †Icriodus platyobliquimarginatus
    • †Icriodus regularicrescens
  • †Indospora
    • †Indospora stewartii
  • †Intrapora
    • †Intrapora irregularis
  • †Iocrinus
  • †Ischyrodonta
    • †Ischyrodonta truncata
    • †Ischyrodonta unionoides
  • †Isodectes
    • †Isodectes obtusus – type locality for species
  • †Isonema
    • †Isonema depressum
  • †Isorophus
    • †Isorophus austini
    • †Isorophus holbrooki
    • †Isorophus warrenensis
  • †Isorthoceras
    • †Isorthoceras albersi
  • Fossil of the Middle-Late Ordovician giant trilobite Isotelus. Isotelus is the state fossil of Ohio.
    †Isotelus
    • †Isotelus maximus
    • †Isotelus megistos

J
  • †Jedria
    • †Jedria ventrica
  • †Jonesella
    • †Jonesella crepidiformis
    • †Jonesella pedigera
  • †Jonesites
    • †Jonesites inornatus
    • †Jonesites marginatus
  • †Jugiaster
    • †Jugiaster speciosus
  • †Juresania
    • †Juresania ovalis

K
  • †Kindleoceras
  • Fossilized shells of the Middle Ordovician-Permian nautiloid cephalopod Kionoceras
    †Kionoceras
  • †Kockelella
    • †Kockelella ortus
    • †Kockelella ranuliformis
    • †Kockelella walliseri
  • †Kophinocrinus – tentative report
    • †Kophinocrinus magrumi – tentative report
  • †Kyreocrinus
    • †Kyreocrinus constellatus

L
  • †Labechia
  • †Laccoprimitia
    • †Laccoprimitia centralis
  • †Laevigatosporites
    • †Laevigatosporites desmoinesensis
    • †Laevigatosporites globosus
    • †Laevigatosporites medius
    • †Laevigatosporites minimus
    • †Laevigatosporites minor
    • †Laevigatosporites ovalis
    • †Laevigatosporites subadnatoides
    • †Laevigatosporites vulgaris
  • †Lambeoceras
  • †Lanthanaster
    • †Lanthanaster cruciformis – type locality for species
  • †Lasiograptus
  • †Latericriodus
    • †Latericriodus latericrescens
  • †Latosporites
    • †Latosporites minutus
  • †Lechritrochoceras
  • †Leioclema
    • †Leioclema alpenense
    • †Leioclema alpense
  • †Leiorhynchus
    • †Leiorhynchus kelloggi
    • †Leiorhynchus laura
    • †Leiorhynchus lucasi
  • †Leiosphaeridia
  • †Leiotriletes
    • †Leiotriletes granoornatus
    • †Leiotriletes levis
    • †Leiotriletes microsaetosus
    • †Leiotriletes pseudaculeatus
    • †Leiotriletes subadnatoides
  • †Lepadocystis
  • †Leperditia
    • †Leperditia glabra
  • †Lepidocoleus
  • †Lepidocyclus
    • †Lepidocyclus perlamellosum
  • †Lepidocystis
  • External mold fossil found in Ohio of the Carboniferous tree-sized club moss relative Lepidodendron
    †Lepidodendron
    • †Lepidodendron aculeatum
    • †Lepidodendron andrewsi
    • †Lepidodendron jaraczewskii – or unidentified comparable form
    • †Lepidodendron scutatum
  • †Lepidolites
  • †Lepidophloios
    • †Lepidophloios larcinus
    • †Lepidophloios vaningeni
  • †Lepidostrobophyllum
  • †Leptaena
    • †Leptaena gibbosa
    • †Leptaena richmondensis
  • †Leptobolus
    • †Leptobolus insignis
  • †Leptodesma
    • †Leptodesma ausablensis
    • †Leptodesma matheri – or unidentified comparable form
    • †Leptodesma rhysema – type locality for species
  • †Leptograptus
  • †Leptophractus – type locality for genus
    • †Leptophractus obsoletus – type locality for species
  • †Leptopoterion
  • †Leptoptygma
    • †Leptoptygma newtonensis – type locality for species
  • †Leptotrypa
  • †Leptotrypella
    • †Leptotrypella ohioensis
  • †Lescuropteris
    • †Lescuropteris moorii
  • †Levizygopleura
    • †Levizygopleura inornata
    • †Levizygopleura williamsi
  • †Lichenocrinus
    • †Lichenocrinus tuberculata
  • †Limipecten
    • †Limipecten lamellus – type locality for species
  • †Limoptera
    • †Limoptera curvata
    • †Limoptera macroptera
  • Lingula
    • †Lingula carbonaria
    • †Lingula meeki
    • †Lingula melie
  • †Lingulichnus
  • †Lingulops
  • †Linoproductus
    • †Linoproductus cora
    • †Linoproductus prattenianus
  • †Linopteris
    • †Linopteris muensteri
    • †Linopteris neuropteroides
  • †Lioclemella
  • †Liospira
    • †Liospira affinis
    • †Liospira depressum – type locality for species
  • †Liroceras – tentative report
  • †Lodanaria
    • †Lodanaria quadricarinata – type locality for species
  • †Logocrinus – tentative report
    • †Logocrinus brandoni – tentative report
  • †Longispina
    • †Longispina lissohybus
  • †Longstaffia – tentative report
    • †Longstaffia centervillensis – type locality for species
  • †Lopholasma
    • †Lopholasma delawarensis
  • †Lophonychia
    • †Lophonychia cordata
  • †Lophophyllidium
    • †Lophophyllidium profundum
  • †Lophospira
    • †Lophospira milleri
    • †Lophospira perangulata
  • †Lophotriletes
    • †Lophotriletes granoornatus
  • Life restoration of the Carboniferous tetrapod Loxomma
    †Loxomma
    • †Loxomma lintonensis – type locality for species
  • †Loxonema
    • †Loxonema pikensis
  • †Loxoplocus
    • †Loxoplocus gothlandicus – type locality for species
  • †Lycospora
    • †Lycospora granulata
    • †Lycospora micropapillata
    • †Lycospora orbicula
    • †Lycospora pellucida
    • †Lycospora pusilla
    • †Lycospora subjuga
    • †Lycospora torquifer
  • †Lyopora
    • †Lyopora goldfussi
  • †Lyriopecten
    • †Lyriopecten mitchelli
  • †Lyrodesma
    • †Lyrodesma major

M
  • †Macrerpeton
    • †Macrerpeton huxleyi – type locality for species
  • †Macrochilina
    • †Macrochilina humilis
  • †Maelonoceras
  • †Manitoulinoceras
    • †Manitoulinoceras gyroforme
    • †Manitoulinoceras williamsae
  • Fossilized shell of the Devonian ammonoid cephalopod Manticoceras
    †Manticoceras
  • †Manticrinus
    • †Manticrinus exaitos
  • †Marsupiocrinus
  • †Maryonychia
    • †Maryonychia concordensis
  • †Mastigograptus
    • †Mastigograptus strictus
  • †Mazostachys
    • †Mazostachys compacta – type locality for species
  • †Mediospirifer
    • †Mediospirifer audaculus
  • †Meekopinna
    • †Meekopinna americana
  • †Meekospira
    • †Meekospira peracuta
  • †Megacanthopora
    • †Megacanthopora fallacis – or unidentified comparable form
  • †Megacystites
  • Life restoration of the Carboniferous amphibian Megalocephalus
    †Megalocephalus – type locality for genus
    • †Megalocephalus lineolatus – type locality for species
  • †Megalograptus
  • †Megastrophia
    • †Megastrophia concava
  • †Megistocrinus
    • †Megistocrinus depressus
  • †Melocrinus
    • †Melocrinus clarkei
  • †Meristospira
    • †Meristospira michiganensis
  • †Merocrinus
  • †Mesocoelia
    • †Mesocoelia obstipisutura
  • †Mesopalaeaster
    • †Mesopalaeaster finei
    • †Mesopalaeaster wilberanus
  • †Mesothyra
  • †Mesotrypa
    • †Mesotrypa orbiculata
  • †Metaxys
    • †Metaxys fossa – type locality for species
  • †Miamoceras
  • †Michelinoceras
  • †Micrhystridium
    • †Micrhystridium adductum
    • †Micrhystridium complurispinosum
    • †Micrhystridium erugatum
    • †Micrhystridium flexibile
    • †Micrhystridium inusitatum
    • †Micrhystridium profusam
  • †Microceras
  • †Microdoma
    • †Microdoma tricarinatus
  • †Microptychis
    • †Microptychis cerithiformis
    • †Microptychis expetendus
    • †Microptychis occabus – type locality for species
    • †Microptychis turbineus
  • †Microreticulatisporites
    • †Microreticulatisporites harrisonii
    • †Microreticulatisporites nobilis
    • †Microreticulatisporites sulcatus
  • †Milleratia
  • †Mitrospermum
    • †Mitrospermum vinculum
  • †Mixoneura
  • †Modiolodon
    • †Modiolodon subovalis
  • †Modiolopsis
    • †Modiolopsis capax
    • †Modiolopsis modiolaris
    • †Modiolopsis versaillesensis
  • Modiolus
    • †Modiolus fountainensis
    • †Modiolus radiatus – type locality for species
    • †Modiolus waverliensis
  • †Modiomorpha
    • †Modiomorpha concentrica
    • †Modiomorpha concentricum
    • †Modiomorpha mytiloides
    • †Modiomorpha subalata
    • †Modiomorpha subalta
  • †Molgophis – type locality for genus
    • †Molgophis macrurus – type locality for species
  • †Monotrypa
  • †Monticulipora
  • †Mourlonia
    • †Mourlonia plena
    • †Mourlonia textus
  • Fossilized shell found in Paulding County of the Devonian brachiopod Mucrospirifer
    †Mucrospirifer
    • †Mucrospirifer alpenensis
    • †Mucrospirifer grabaui – or unidentified comparable form
    • †Mucrospirifer mucronatus
    • †Mucrospirifer prolificus
  • †Multiplicisphaeridium
    • †Multiplicisphaeridium anastomosis
    • †Multiplicisphaeridium verrucarum
  • †Muraticavea
    • †Muraticavea enteichia
  • †Murchisonia
    • †Murchisonia anderdoniae
    • †Murchisonia dublinensis – type locality for species
    • †Murchisonia gracilicrista
    • †Murchisonia intermedia – type locality for species
    • †Murchisonia leda
    • †Murchisonia minuta
    • †Murchisonia sibleyensis
    • †Murchisonia subcarinata
    • †Murchisonia subulata
  • †Myalina
    • †Myalina pernaformis
  • †Myelodactylus – or unidentified comparable form
  • †Mytilarca
    • †Mytilarca cordata

N
  • †Naevisphaeridium
    • †Naevisphaeridium plenilunium
  • †Narthecoceras
    • †Narthecoceras dunni – type locality for species
  • Fossilized shell of the Early Devonian – Triassic sea snail Naticopsis
    †Naticopsis
    • †Naticopsis aequistriata – type locality for species
    • †Naticopsis comperta
    • †Naticopsis genevievensis
    • †Naticopsis levis
    • †Naticopsis ziczac – type locality for species
  • †Navifusa
    • †Navifusa drosera
  • †Neilsonia
    • †Neilsonia uninodocarinata
  • †Neochonetes
    • †Neochonetes granulifer
    • †Neochonetes variolata
  • †Neospirifer
    • †Neospirifer cameratus
    • †Neospirifer dunbari
  • †Nephriticeras – tentative report
  • †Nereidavus
    • †Nereidavus varians
  • †Neumatoceras
  • Fronds of the Carboniferous seed fern Neuropteris
    †Neuropteris
    • †Neuropteris heterophylla
    • †Neuropteris ovata
    • †Neuropteris scheuchzeri
  • †Nicholsonella
    • †Nicholsonella peculiaris
  • †Nicollidina
    • †Nicollidina remscheidensis
  • †Nodonema
    • †Nodonema granulatum
  • †Nucleocrinus
    • †Nucleocrinus elegans – or unidentified comparable form
  • Interior of a fossilized shell of the Early Ordovician-modern marine bivalve Nucula
    Nucula
    • †Nucula corbuliformis
  • Nuculana
  • †Nucularca
    • †Nucularca cingulata
  • †Nuculites
    • †Nuculites faberi
    • †Nuculites fabula
    • †Nuculites oblongatus
    • †Nuculites triqueter
  • †Nuculopsis
    • †Nuculopsis beyrichi
    • †Nuculopsis elongata
    • †Nuculopsis girtyi
    • †Nuculopsis shumardana – or unidentified related form
  • † Nyassa
    • †Nyassa recta

O
  • Life restoration of the Carboniferous amphibian Odonterpeton
    †Odonterpeton – type locality for genus
    • †Odonterpeton triangulare – type locality for species
  • †Odontopleura
  • †Odontopteris
    • †Odontopteris aequalis
    • †Odontopteris brardii
  • †Oehlertella
    • †Oehlertella stoutella
  • †Oestocephalus – type locality for genus
    • †Oestocephalus amphiuminum – type locality for species
  • †Ohiocrinus
    • †Ohiocrinus laxus
    • †Ohiocrinus oehanus
  • †Olenoides
  • †Onchus
  • †Oncoceras
  • †Onniella
  • †Onychochilus
    • †Onychochilus abruptum – type locality for species
  • †Oomoceras
  • Life restoration of the Carboniferous-Permian synapsid (mammal precursor) Ophiacodon
    †Ophiacodon
    • †Ophiacodon uniformis – or unidentified comparable form
  • †Opisthoptera
  • †Opsiocrinus
    • †Opsiocrinus mariae
  • †Orbiculoidea
    • †Orbiculoidea capuliformis
    • †Orbiculoidea herzeri
    • †Orbiculoidea missouriensis
    • †Orbiculoidea newberryi
  • †Orthis – tentative report
  • †Orthoceras
    • †Orthoceras trusitum
    • †Orthoceras type locality for species – informal
  • †Orthodesma
    • †Orthodesma canaliculatum
  • †Orthonema
    • †Orthonema salteri
    • †Orthonema subtaeniatum
  • †Orthonota
    • †Orthonota undulata
  • †Orthonybyoceras – tentative report
  • †Orthonychia
    • †Orthonychia chesterense – tentative report
    • †Orthonychia herzeri
    • †Orthonychia infabricatus – type locality for species
    • †Orthonychia parva
    • †Orthonychia sciotoensis – type locality for species
    • †Orthonychia waverlyensis
  • †Orthopleura
  • †Orthorhynchula
    • †Orthorhynchula linneyi
  • †Ortonella
  • †Oulodus
    • †Oulodus equirectis
    • †Oulodus equirectus
  • †Oxyprora
    • †Oxyprora missouriensis
  • †Ozarkodina
    • †Ozarkodina bohemica
    • †Ozarkodina confluens
    • †Ozarkodina remscheidenesis
    • †Ozarkodina sagitta
    • †Ozarkodina tillmani

P
  • †Pachydictya
    • †Pachydictya bifurcata
  • †Paiderocrinus
    • †Paiderocrinus asketos
    • †Paiderocrinus ochthos
  • †Palacanthus
    • †Palacanthus acutus
  • †Palaeocapulus
    • †Palaeocapulus equilateralis
    • †Palaeocapulus morsei – type locality for species
  • †Palaeoconcha
  • †Palaeolima
    • †Palaeolima retifera
    • †Palaeolima triplistriata
  • †Palaeoneilo
    • †Palaeoneilo bedfordensis
    • †Palaeoneilo bownockeri
    • †Palaeoneilo constricta – or unidentified related form
    • †Palaeoneilo oweni
  • †Palaeonucula
    • †Palaeonucula lunulata – type locality for species
    • †Palaeonucula subrotundata
  • †Palaeopalaemon
    • †Palaeopalaemon elegans – type locality for species
  • †Palaeophycus
  • †Palaeoporites
  • †Palaeoscenidium
    • †Palaeoscenidium cladophorum
    • †Palaeoscenidium quadriramosum
  • †Palaeostachya
    • †Palaeostachya aperta
    • †Palaeostachya decacnema
    • †Palaeostachya elongata
    • †Palaeostachya ovalis
    • †Palaeostachya trabeculata – type locality for species
  • †Palaeostylus
    • †Palaeostylus marvinwelleri
    • †Palaeostylus minuta
    • †Palaeostylus venustus
  • †Palaeotrochus
    • †Palaeotrochus kearnyi
  • †Palaeozygopleura
    • †Palaeozygopleura hamiltoniae
    • †Palaeozygopleura joani
    • †Palaeozygopleura laeviusculum
    • †Palaeozygopleura parvula
    • †Palaeozygopleura sibleyensis
  • †Paleofavosites
    • †Paleofavosites prolificus
  • †paleoporites
  • †Paleschara
  • †Paliphyllum
    • †Paliphyllum brassfieldense
    • †Paliphyllum primarium
    • †Paliphyllum regulare
  • †Panderodus
    • †Panderodus unicostatus
  • †Paracyclas
    • †Paracyclas lirata
    • †Paracyclas proavia
  • †Paracyrtolites
    • †Paracyrtolites carinatus
  • †Paragoniozona
    • †Paragoniozona granulostriata – or unidentified comparable form
  • †Parajuresania
    • †Parajuresania nebrascensis
  • †Paraliospira
    • †Paraliospira rugata
  • †Parallelocrinus
    • †Parallelocrinus sturgeoni – type locality for species
  • †Parallelodon
    • †Parallelodon irvinensis
    • †Parallelodon obsoletus
    • †Parallelodon tenuistriatus
  • Assemblage of the Early-Middle Devonian brachiopod Paraspirifer
    †Paraspirifer
    • †Paraspirifer bownockeri
  • †Parazyga
  • †Parvohallopora
    • †Parvohallopora onealli
    • †Parvohallopora ramosa
  • †Pasceolus
    • †Pasceolus camdenensis
  • †Patellilabia
  • †Patelliocrinus – type locality for genus
    • †Patelliocrinus planus – type locality for species
  • †Pattersonia
  • †Paupospira
    • †Paupospira bowdeni
    • †Paupospira trilineata – type locality for species
    • †Paupospira tropidophora
  • Fossils of the Late Devonian-Permian fern-like fronds Pecopteris
    †Pecopteris
    • †Pecopteris arborescens
    • †Pecopteris candolleana
    • †Pecopteris cyathea
    • †Pecopteris hemitelioides
    • †Pecopteris lamuriana
    • †Pecopteris miltonii
    • †Pecopteris unita
  • †Penniretepora
    • †Penniretepora irregularis – or unidentified comparable form
  • †Pennoceras
    • †Pennoceras seamani
  • †Pentamerus
  • †Permophorus
    • †Permophorus oblongus
    • †Permophorus subcostatus
    • †Permophorus tropidophorus
  • †Pernopecten
    • †Pernopecten ohioensis
    • †Pernopecten prosseri
  • †Peronopora
    • †Peronopora decipiens
  • †Petalodus
    • Fossilized tooth found in Athens County of the Carboniferous-Permiand shark Petalodus
      †Petalodus ohioensis
  • †Petigopora
    • †Petigopora offfula
  • †Petraster
  • †Petrocrania
    • †Petrocrania hamiltonensis
    • †Petrocrania laelia
    • †Petrocrania modesta
    • †Petrocrania scabiosa
  • †Petrozium
    • †Petrozium pelagicum
  • †Pharkidonotus
    • †Pharkidonotus breyeri – type locality for species
    • †Pharkidonotus labioreflexus – type locality for species
    • †Pharkidonotus percarinatus
  • †Phestia
    • †Phestia inflata
    • †Phestia pandoraeformis
  • †Philhedra
    • †Philhedra crenistriatula
  • Life restoration of the Carboniferous-Permian amphibian Phlegethontia.
    †Phlegethontia – type locality for genus
    • †Phlegethontia linearis – type locality for species
    • †Phlegethontia longissima – type locality for species
  • †Pholadella
    • †Pholadella radiata
  • †Pholadomorpha
    • †Pholadomorpha pholadiformis
  • †Pholidops
  • †Pholidostrophia
    • †Pholidostrophia geniculata
    • †Pholidostrophia gracilis
    • †Pholidostrophia nacrea
  • †Phragmoceras
  • †Phragmolites
    • †Phragmolites elegans – type locality for species
  • †Phragmosphaera
    • †Phragmosphaera lyra
  • †Phylloporina
  • †Phyloblatta
    • †Phyloblatta jeffersoniana – type locality for species
  • †Phymatopleura
    • †Phymatopleura brazoensis
    • †Phymatopleura nodosa
  • †Phyrgilocrinus
    • †Phyrgilocrinus batheri
  • †Phyrtosaster – type locality for genus
    • †Phyrtosaster casteri – type locality for species
  • †Physonemus
    • †Physonemus striatus – or unidentified comparable form
  • †Physotomya
  • †Pianodesma
  • Pinna
    • †Pinna missouriensis
  • †Pityosporites
    • †Pityosporites westphalensis
  • †Placopterina
    • †Placopterina ohioensis – type locality for species
  • Fossilized shell of the Ordovician brachiopod Plaesiomys
    †Plaesiomys
    • †Plaesiomys subquadrata
  • †Plagiascetus – type locality for genus
    • †Plagiascetus lateralis – type locality for species
  • †Plagioglypta
  • †Planalveolitella
    • †Planalveolitella parasitica
  • †Planisporites
    • †Planisporites granifer
  • †Planoendothyra
    • †Planoendothyra associata
    • †Planoendothyra evoluta
    • †Planoendothyra orbiculata
    • †Planoendothyra ovata – or unidentified comparable form
    • †Planoendothyra whitesidei – or unidentified comparable form
  • Fossilized shell found near Wooster of the Silurian-Early Triassic sea snail Platyceras
    †Platyceras
    • †Platyceras attenuatum
    • †Platyceras bucculentum
    • †Platyceras carinatum
    • †Platyceras cymbium
    • †Platyceras erectum
    • †Platyceras lineatum
    • †Platyceras nasutum
    • †Platyceras rarispinum
    • †Platyceras subglobosa – type locality for species
    • †Platyceras thetis
  • †Platycoryphe
  • Fossilized skeleton of the Carboniferous amphibian Platyrhinops
    †Platyrhinops – type locality for genus
    • †Platyrhinops lyelli – type locality for species
  • †Platystrophia
    • †Platystrophia actilirata
    • †Platystrophia acutilirata
    • †Platystrophia annieana
    • †Platystrophia auburnensis
    • †Platystrophia clarksvillensis
    • †Platystrophia corryvillensis
    • †Platystrophia crassa
    • †Platystrophia cummingsi
    • †Platystrophia cypha
    • †Platystrophia elkhornensis
    • †Platystrophia foerstei
    • †Platystrophia hopensis
    • †Platystrophia laticosta
    • †Platystrophia moritura
    • †Platystrophia morrowensis
    • †Platystrophia nitida
    • †Platystrophia pauciplicata
    • †Platystrophia ponderosa
    • †Platystrophia sublaticosta
    • †Platystrophia wallowayi
  • †Plectodina
  • †Plectonotus
    • †Plectonotus boucoti
  • †Plectorthis
    • †Plectorthis aequivalvis
    • †Plectorthis fissicosta
    • †Plectorthis jamesi
    • †Plectorthis neglecta
    • †Plectorthis plicatella
  • †Plethospira
  • Fossil of the Silurian-Carboniferous tabulate coral Pleurodictyum
    †Pleurodictyum
    • †Pleurodictyum cornu
    • †Pleurodictyum plana
  • †Pleuronotus
    • †Pleuronotus decewi
  • †Pleuroptyx – type locality for genus
    • †Pleuroptyx clavatus – type locality for species
  • †Pleurorthoceras
    • †Pleurorthoceras clarksvillense
  • †Plexadictyon
  • †Plocezyga
    • †Plocezyga acuminata
    • †Plocezyga conica
    • †Plocezyga cordiformis
    • †Plocezyga costata – type locality for species
    • †Plocezyga delicata
    • †Plocezyga excellens
    • †Plocezyga intermedia
    • †Plocezyga lineata
    • †Plocezyga lirata
    • †Plocezyga markae
    • †Plocezyga ornata – type locality for species
    • †Plocezyga ornatissima
    • †Plocezyga percostata
    • †Plocezyga perminuta
    • †Plocezyga regularia
    • †Plocezyga subnodosa
    • †Plocezyga turbinata
  • †Podolithus
  • †Poleumita
    • †Poleumita incarinatus
  • †Polidevcia
    • †Polidevcia bellistriata
    • †Polidevcia stevensiana
  • †Polyentactinia
    • †Polyentactinia craticulata
    • †Polyentactinia leptosphaera
    • †Polyentactinia plecta
    • †Polyentactinia polygonia
  • Various conodont elements of Polygnathus
    †Polygnathus
    • †Polygnathus eiflius
    • †Polygnathus intermedius
    • †Polygnathus linguiformis
    • †Polygnathus pseudofoliatus
    • †Polygnathus strongi
    • †Polygnathus xylus
  • †Polypora
    • †Polypora valida – or unidentified comparable form
  • Pontocypris
    • †Pontocypris acuminata
  • †Poroblattina
    • †Poroblattina brachyptera – type locality for species
    • †Poroblattina lata – type locality for species
    • †Poroblattina ohioensis – type locality for species
    • †Poroblattina richmondiana – type locality for species
    • †Poroblattina rotundata – type locality for species
  • †Posidonia
    • †Posidonia girtyi
  • †Praenucula
  • †Primiriopsis
    • †Primiriopsis punctulifera
  • †Primitia
    • †Primitia cincinnatiensis
    • †Primitia rudis
  • †Primitiella
    • †Primitiella claypolei
    • †Primitiella whitfieldi
  • †Probillingsites
    • †Probillingsites lebanonensis
  • Proboscina
    • †Proboscina auloporoides
    • †Proboscina frondosa
  • †Proctothylacocrinus
    • †Proctothylacocrinus esseri
    • †Proctothylacocrinus longus
  • †Productus
    • †Productus semireticulatua
  • Restoration of the Silurian trilobite Proetus
    †Proetus
  • †Promopalaeaster
    • †Promopalaeaster granulosus
    • †Promopalaeaster wykoffi
  • †Promytilus
    • †Promytilus pottsvillensis – type locality for species
  • †Propora
    • †Propora conferta
    • †Propora eminula
  • †Prosserella
    • †Prosserella lucasi
    • †Prosserella subtransversa
  • †Protaraea
    • †Protaraea richmondensis
  • †Protarea
  • †Protathyris – tentative report
  • †Protobalanus
    • †Protobalanus spinicoronatus – type locality for species
  • †Protocycloceras
    • †Protocycloceras rushense
  • †Protokionoceras
  • †Protoleptostrophia
    • †Protoleptostrophia perplana
  • †Protosalvinia
    • †Protosalvinia arnoldii
    • †Protosalvinia ravenna
  • †Protoscolex
  • Restoration based on the "Schunnemunk tree" fossil of the Silurian-Late Devonian tree-like probable fungus Prototaxites
    †Prototaxites
    • †Prototaxites clevelandensis
  • †Pseudaviculopecten
    • †Pseudaviculopecten fasciculatus
    • †Pseudaviculopecten scabridus
  • †Pseudoactinodictyon
    • †Pseudoactinodictyon stearni
    • †Pseudoactinodictyon vagans
  • †Pseudoatrypa
    • †Pseudoatrypa devoniana
  • †Pseudobigalea
    • †Pseudobigalea crista
  • †Pseudocolpomya
    • †Pseudocolpomya miseneri
  • †Pseudolingula
  • †Pseudomonotis
    • †Pseudomonotis equistriata
    • †Pseudomonotis hawni
    • †Pseudomonotis millhorni – type locality for species
  • †Pseudomulceodens
    • †Pseudomulceodens cancellatus
  • †Pseudooneotodus
    • †Pseudooneotodus bicornis
  • †Pseudophorus
    • †Pseudophorus antiquus
  • †Pseudorthoceras
    • †Pseudorthoceras knoxense
  • †Pseudozygopleura
    • †Pseudozygopleura acuminata
    • †Pseudozygopleura angustata
    • †Pseudozygopleura assertonsoris
    • †Pseudozygopleura baltea – type locality for species
    • †Pseudozygopleura cirritus
    • †Pseudozygopleura contractus
    • †Pseudozygopleura deloi
    • †Pseudozygopleura eximia
    • †Pseudozygopleura funis
    • †Pseudozygopleura girtyi
    • †Pseudozygopleura gradatus
    • †Pseudozygopleura irrugata
    • †Pseudozygopleura kellettae – or unidentified comparable form
    • †Pseudozygopleura lanceolatus
    • †Pseudozygopleura limus
    • †Pseudozygopleura macra – or unidentified comparable form
    • †Pseudozygopleura mucronatus
    • †Pseudozygopleura multicostata – or unidentified comparable form
    • †Pseudozygopleura pagoda – or unidentified comparable form
    • †Pseudozygopleura palus – type locality for species
    • †Pseudozygopleura pandus
    • †Pseudozygopleura peoriense
    • †Pseudozygopleura pinquicula
    • †Pseudozygopleura plummeri – type locality for species
    • †Pseudozygopleura pluricostata
    • †Pseudozygopleura pugonis
    • †Pseudozygopleura pulchra
    • †Pseudozygopleura rectus
    • †Pseudozygopleura schucherti – or unidentified comparable form
    • †Pseudozygopleura scitula
    • †Pseudozygopleura scruposus
    • †Pseudozygopleura semicostata
    • †Pseudozygopleura sinuosior
    • †Pseudozygopleura subulatus
    • †Pseudozygopleura tenuivirga
    • †Pseudozygopleura variegata
  • †Psiloconcha
    • †Psiloconcha grandis
    • †Psiloconcha inornata
    • †Psiloconcha sinuata
  • †Pterinea
    • †Pterinea corrugatus
    • †Pterinea demissa
  • †Pterinopecten
    • †Pterinopecten undosus
  • †Pterochiton
    • †Pterochiton carbonarius
    • †Pterochiton spatulatus
  • †Pterospermella
    • †Pterospermella capitana
    • †Pterospermella latibalteus
    • †Pterospermella radiata
    • †Pterospermella solis
  • †Pterotheca
  • Life restoration of the Silurian-Middle Devonian eurypterid ("sea scorpion") Pterygotus
    †Pterygotus
    • †Pterygotus carmani
  • †Ptilodictya
  • †Ptomatis
    • †Ptomatis proteiforme
  • †Ptotosalvinia
    • †Ptotosalvinia furcata
  • †Ptychocarpus
  • †Ptychocrinus
  • †Ptychomphalina
    • †Ptychomphalina lucina
    • †Ptychomphalina regulata
  • †Ptychopteria
    • †Ptychopteria flabellum
  • †Ptychospirina
    • †Ptychospirina varians
  • †Ptyonius
    • †Ptyonius marshii – type locality for species
  • †Pugnax
    • †Pugnax utah
  • †Punctatisporites
    • †Punctatisporites aerarius
    • †Punctatisporites glaber
    • †Punctatisporites minutus
    • †Punctatisporites obesus
  • †Punctatisporties
    • †Punctatisporties minutus
  • †Punctatosporites
    • †Punctatosporites granifer
    • †Punctatosporites minutus
    • †Punctatosporites rotundus
  • †Punctospirifer
    • †Punctospirifer kentuckensis
  • †Pustula
    • †Pustula pertenuis
  • †Pustulisphaeridium
    • †Pustulisphaeridium levibrachium
  • †Pyanomya
  • †Pycnocrinus
  • †Pyrenomeous

Q
  • †Quadrijugator

R
  • †Rafinesquina
    • †Rafinesquina alternata
    • †Rafinesquina loxorhytis
    • †Rafinesquina ponderosa
    • †Rafinesquina squamula
  • †Raistrickia
    • †Raistrickia crinita
    • †Raistrickia srinita
  • †Ramphoprion
  • †Raphistoma
  • †Rasmussenoceras
  • †Reinschospora
    • †Reinschospora magnifica
  • †Renalcis
  • †Reptaria
    • †Reptaria stolonifera
  • †Reteocrinus
  • †Reteporina
    • †Reteporina striata
  • †Retichonetes
  • †Reticulatisporites
    • †Reticulatisporites muricatus
  • †Retispira
    • †Retispira fascireticulatus – type locality for species
    • †Retispira tenuilineata
    • †Retispira waverliensis
  • †Retrorsirostra
    • †Retrorsirostra carleyi
  • †Rhachicrinus
    • †Rhachicrinus wrighti
  • †Rhachiopteris
  • †Rhapanocrinus
  • †Rhegmaphyllum
    • †Rhegmaphyllum daytonensis
  • †Rhinidictya
  • †Rhinocaris
    • †Rhinocaris ehlersi
  • †Rhipidomella
    • †Rhipidomella pecosi
    • †Rhipidomella penelope – or unidentified comparable form
    • †Rhipidomella trigona
    • †Rhipidomella vanuxemi
  • †Rhipidothyris
  • Fossil of the burrow ichnogenus Rhizocorallium
    †Rhizocorallium
  • †Rhombodictyon
  • †Rhombopora
    • †Rhombopora lepidodendroides
  • †Rhombotrypa
    • †Rhombotrypa subquadrata
  • †Rhopolonaria
    • †Rhopolonaria venosa
  • †Rhynchopora
  • †Rhynchotrema
    • †Rhynchotrema denatum
    • †Rhynchotrema dentatum
  • †Rhynchotreta
  • †Rhytimya
    • †Rhytimya compressa
    • †Rhytimya faberi
    • †Rhytimya lunulata
    • †Rhytimya oehana
    • †Rhytimya radiata
  • †Richmondoceras
    • †Richmondoceras brevicameratum
  • †Rizoceras
  • †Ropalonaria
  • †Royalella
    • †Royalella quadrolirata – type locality for species
    • †Royalella swallowiana – type locality for species
  • †Ruedemannia
    • †Ruedemannia trilix – type locality for species
  • †Rugomena
    • †Rugomena vetusta
  • †Rugosochonetes
  • Fossil found in southern Ohio of the arthropod burrow ichnogenus Rusophycus
    †Rusophycus
    • †Rusophycus biloba

S
  • †Saccella
    • †Saccella parva
  • †Salpingostoma
    • †Salpingostoma richmondensis – tentative report
  • †Samaropsis
  • †Sanguinolites
    • †Sanguinolites cuneatus
    • †Sanguinolites hekitoensis – type locality for species
  • Restoration of the Carboniferous amphibian Sauropleura
    †Sauropleura – type locality for genus
    • †Sauropleura pectinata – type locality for species
  • †Schellwienella
  • †Schistoceras
  • †Schizambon – tentative report
  • †Schizoblatta – type locality for genus
    • †Schizoblatta alutacea – type locality for species
  • †Schizocrania
    • †Schizocrania filosa
  • †Schizodus
    • †Schizodus acuminatus – type locality for species
    • †Schizodus affinis
    • †Schizodus appressus
    • †Schizodus chesterensis – or unidentified comparable form
    • †Schizodus curtus
    • †Schizodus subcircularis
    • †Schizodus wheeleri
  • †Schizolopha
  • †Schizophoria
    • †Schizophoria ferronensis
    • †Schizophoria impressa
  • †Schlotheimophyllum
    • †Schlotheimophyllum benedicti
    • †Schlotheimophyllum patellatum
  • †Schuchertella
    • †Schuchertella interstriata
  • †Schuchertoceras
  • †Scolithos
    • †Scolithos laxata
  • †Sedgwickia – tentative report
  • †Semicoscinium
  • †Semipora – tentative report
    • †Semipora ehlersi
  • †Septopora
    • †Septopora biserialis
    • †Septopora robusta
  • †Serpulites
  • †Serpulospira
    • †Serpulospira diversiformis
  • †Sevillia
    • †Sevillia sevillensis
    • †Sevillia trinucleata
  • †Shansiella
    • †Shansiella beckwithana
    • †Shansiella carbonaria
    • †Shansiella insecta
  • †Shideleroceras
  • Fossilized stump of the Carboniferous-Permian club moss relative Sigillaria
    †Sigillaria
    • †Sigillaria brardii
    • †Sigillaria elegans
    • †Sigillaria ficoides
    • †Sigillaria lacoei
    • †Sigillaria laurenciana
    • †Sigillaria mamillaris
    • †Sigillaria orbicularis
    • †Sigillaria pileata – type locality for species
    • †Sigillaria rugosa
  • †Sigillariostrobus
  • †Silfonocrinus
    • †Silfonocrinus siluricus
  • †Silicaster
    • †Silicaster esseri
  • †Similodonta – tentative report
  • †Sinuites
    • †Sinuites cancellatus
    • †Sinuites granistriatus
    • †Sinuites subcompressa
  • Modern specimen of the marine bivalve Solemya
    Solemya
    • †Solemya radiata
    • †Solemya sharonensis – type locality for species
  • †Soleniscus
    • †Soleniscus aplatus – type locality for species
    • †Soleniscus klipparti
    • †Soleniscus primigenia
    • †Soleniscus primogenium
    • †Soleniscus regularis
    • †Soleniscus typicus
  • †Solenomorpha
    • †Solenomorpha lamborni
  • †Solisphaeridium
    • †Solisphaeridium astrum
    • †Solisphaeridium clavum
    • †Solisphaeridium folliculum
    • †Solisphaeridium rigispinosum
  • †Sowerbyella
    • †Sowerbyella rugosa
  • †Spatiopora
  • †Sphenolium
  • †Sphenophragmus
    • †Sphenophragmus nanus – or unidentified comparable form
  • Fossilized leaves and branches of the Devonian-Triassic horsetail relative Sphenophyllum
    †Sphenophyllum
    • †Sphenophyllum majus
    • †Sphenophyllum oblongifolium
  • †Sphenopteris
    • †Sphenopteris elegans – or unidentified comparable form
    • †Sphenopteris minutisecta
  • †Sphenosphaera
    • †Sphenosphaera centervillensis – type locality for species
    • †Sphenosphaera fiscellostriata – type locality for species
    • †Sphenosphaera opertus – type locality for species
    • †Sphenosphaera recurvus – type locality for species
  • †Sphenothallus
  • †Spiloblattina
    • †Spiloblattina variegata – type locality for species
  • †Spinocyrtia
    • †Spinocyrtia euryteines – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Spinosporites
    • †Spinosporites exiguus
  • †Spinulicosta
    • †Spinulicosta spinulicosta
  • †Spinyplatyceras
    • †Spinyplatyceras dumosum
  • Fossilized shell of the Late Ordovician-Late Triassic brachiopod Spirifer
    †Spirifer
    • †Spirifer opimus
    • †Spirifer pennatus
  • †Spiromphalus
    • †Spiromphalus pervius – type locality for species
  • Spiropteris
  • Spirorbis
    • †Spirorbis arkonensis
    • †Spirorbis planum
  • †Spiroscala
    • †Spiroscala solida
  • †Spongentactinella
    • †Spongentactinella veles
  • †Sporangites
    • †Sporangites huronensis
  • †Spyroceras
  • †Staufferoceras
  • †Stegocoelia
    • †Stegocoelia copei – or unidentified comparable form
  • †Stegops
    • †Stegops newberryi – type locality for species
  • †Stellinium
    • †Stellinium cristatum
    • †Stellinium inflatum
    • †Stellinium octoaster
  • †Stelodictyon
  • †Stereoaster
    • †Stereoaster squamosus
  • †Stereostylus
    • †Stereostylus amesensis
  • †Stereotoechus
    • †Stereotoechus typicus – or unidentified comparable form
  • Life restorations of a male (foreground) and female (background) of the Late Devonian-Carboniferous Chimaera relative Stethacanthus
    †Stethacanthus
    • †Stethacanthus altonensis
  • †Stibarocrinus
    • †Stibarocrinus centervillensis
  • †Stictoporella
  • †Stictoporina
    • †Stictoporina granulifera
  • †Stigmatella
    • †Stigmatella catenulata
    • †Stigmatella crenulata
    • †Stigmatella dychei
  • Stomatopora
  • †Straparollus
    • †Straparollus hecale – or unidentified comparable form
    • †Straparollus rudis – or unidentified comparable form
  • †Strataster
    • †Strataster devonicus
  • †Streblochondria
  • †Streblopteria
    • †Streblopteria oklahomensis
  • †Streblotrypa
    • †Streblotrypa anomala
    • †Streblotrypa hamiltonensis
  • †Streptaster
    • †Streptaster vorticellatus
  • †Streptelasma
    • †Streptelasma divaricans
  • †Striatopora
    • †Striatopora flexuosa
    • †Striatopora intermittens
  • †Strobeus
    • †Strobeus brevis
    • †Strobeus immanis
    • †Strobeus intercalaris
    • †Strobeus paludinaeformis
  • †Stromatocerium
    • †Stromatocerium granulosum
  • †Stromatopora
  • †Strombodes
    • †Strombodes socialis
  • †Strophalosia
    • †Strophalosia truncata
  • †Stropheodonta
    • †Stropheodonta demissa
  • †Strophodonta
    • †Strophodonta demissa – report made of unidentified related form or using admittedly obsolete nomenclature
  • Fossilized shell of the Ordovician-Silurian brachiopod Strophomena
    †Strophomena
    • †Strophomena concordensis
    • †Strophomena erratica
    • †Strophomena extenuata
    • †Strophomena maysvillensis
    • †Strophomena neglecta
    • †Strophomena nutans
    • †Strophomena planoconvexa
    • †Strophomena planumbona
    • †Strophomena sulcata
  • †Strophostylus
  • †Sturgeonospira – type locality for genus
    • †Sturgeonospira tortula – type locality for species
  • †Stygetoblatta – type locality for genus
    • †Stygetoblatta latipennis – type locality for species
  • †Styliolina
    • †Styliolina fissurella
  • †Stylonema
    • †Stylonema robusta
  • †Subulites
    • †Subulites planilateralis – type locality for species
  • †Sulcoretepora
    • †Sulcoretepora deissi
    • †Sulcoretepora incisurata
  • †Synhomalonotus
  • †Syntomopterus
    • †Syntomopterus richardsoni
  • Fossil of the Devonian tabulate coral Syringopora
    †Syringopora – tentative report
    • †Syringopora reteformis
  • †Syringostroma
    • †Syringostroma cylindricum
    • †Syringostroma densum
    • †Syringostroma nodulatum
    • †Syringostroma pustulosum
  • †Syringothyris
    • †Syringothyris bedfordensis
  • †Syscioblatta
    • †Syscioblatta anomala – type locality for species
    • †Syscioblatta minor – type locality for species
    • †Syscioblatta misera – type locality for species
    • †Syscioblatta obscura – type locality for species
    • †Syscioblatta steubenvilleana – type locality for species
  • †Sysciophlebia
    • †Sysciophlebia acutipennis – type locality for species
    • †Sysciophlebia adumbrata – type locality for species
    • †Sysciophlebia affinis – type locality for species
    • †Sysciophlebia balteata
    • †Sysciophlebia benedicta – type locality for species
    • †Sysciophlebia hybrida – type locality for species
    • †Sysciophlebia nana – type locality for species
    • †Sysciophlebia obtusa – type locality for species
    • †Sysciophlebia picta – type locality for species
    • †Sysciophlebia rotundata – type locality for species
    • †Sysciophlebia schucherti – type locality for species
    • †Sysciophlebia scudderi – type locality for species
    • †Sysciophlebia variegata – type locality for species
    • †Sysciophlebia whitei – type locality for species

T
  • †Taeniaster
    • †Taeniaster elegans
  • †Taeniopteris
    • †Taeniopteris lescuriana
    • †Taeniopteris newberriana
  • †Tamiobatis
    • †Tamiobatis vetustus
  • †Tanaocrinus
  • †Tasmanites
  • †Technophora
  • †Technophorus – type locality for genus
    • †Technophorus faberi – type locality for species
  • †Teichichnus
  • †Temnocheilus
    • †Temnocheilus forbesianus
  • Fossilized shell of the Early Ordovician-Late Devonian probable mollusc Tentaculites
    †Tentaculites
    • †Tentaculites bellulus
    • †Tentaculites gracilistriatus
  • †Tetradium
  • †Tetranota
    • †Tetranota bidorsata
  • †Tetrentactinia
    • †Tetrentactinia barysphaera
    • †Tetrentactinia gracilispinosa
    • †Tetrentactinia quadrispinosa
    • †Tetrentactinia somphosphaera
    • †Tetrentactinia somphozona
    • †Tetrentactinia spongacea
    • †Tetrentactinia teuchestes
  • †Thamnoptychia
    • †Thamnoptychia alpenensis
    • †Thamnoptychia labyrinthica
    • †Thamnoptychia minuitissima
    • †Thamnoptychia projecta – tentative report
    • †Thamnoptychia silicensis
  • †Thymospora
    • †Thymospora obscura
    • †Thymospora pseudothiessenii
  • †Tirocrinus
    • †Tirocrinus trochos
  • †Tomoceras
    • †Tomoceras gilliana – or unidentified comparable form
  • †Torispora
    • †Torispora securis
  • †Tornacia
    • †Tornacia stela
  • †Tornoceras
    • †Tornoceras uniagnulare
    • †Tornoceras uniangulare
  • †Toryniferella
  • †Trachydomia
  • †Tremanotus
  • †Trematis
    • †Trematis millepunctata
    • †Trematis millepuntata
    • †Trematis reticularis
  • †Trematopora
  • †Trepospira
    • †Trepospira illinoisensis
  • Fossilized shell of the Ordovician nautiloid cephalopod Treptoceras
    †Treptoceras
    • †Treptoceras byrnesi
    • †Treptoceras cincinnatiensis
    • †Treptoceras duseri
    • †Treptoceras fosteri
  • †Triarthrus
  • †Triendoceras – tentative report
    • †Triendoceras davisi
  • †Trigonoglossa
    • †Trigonoglossa nebrascensis
  • †Trigrammaria
  • †Trilonche
    • †Trilonche cancellicula
    • †Trilonche prolata
  • †Trimerella
  • †Triquitrites
    • †Triquitrites additus
    • †Triquitrites bransonii
    • †Triquitrites crassus
    • †Triquitrites minutus
    • †Triquitrites sculptilis
    • †Triquitrites spinosus
    • †Triquitrites subspinosus – or unidentified comparable form
    • †Triquitrites tribullatus
  • †Trocholites
  • †Trochonema
  • †Trochonemopsis
    • †Trochonemopsis meekanum
  • †Troedssonoceras
  • †Tropidodiscus
    • †Tropidodiscus vesculilineatus – type locality for species
  • †Tropidoleptus
    • †Tropidoleptus carinatus
  • †Truncatiramus – now regarded as a jr. synonym of Erettopterus[1][2]
    • †Truncatiramus perryensis
  • Trypetesa
    • †Trypetesa caveata
  • †Trypherocrinus
    • †Trypherocrinus brassfieldensis
  • †Tuberculatosporites
    • †Tuberculatosporites robustus
  • Life restoration of the Carboniferous amphibian Tuditanus
    †Tuditanus – type locality for genus
    • †Tuditanus punctulatus – type locality for species
  • †Turbocrinus
    • †Turbocrinus paunctum
  • †Turbonopsis
    • †Turbonopsis shumardii
  • †Typanocrinus
    • †Typanocrinus strombos

U
  • †Ulrichia
    • †Ulrichia nodosa
  • †Umbotropis
    • †Umbotropis filitexta – type locality for species
  • †Uncinisphaera
    • †Uncinisphaera lappa
  • †Unellium
    • †Unellium ampullium
    • †Unellium elongatum
    • †Unellium oscitans
  • †Unklesbayella – type locality for genus
    • †Unklesbayella geinitzi
  • Fossil of the Ordovician-Devonian sea star Urasterella
    †Urasterella
    • †Urasterella grandis

V
  • †Vanuxemia
    • †Vanuxemia waynesvillensis – type locality for species
  • †Vaupelia
  • †Vermiforichnus
    • †Vermiforichnus clarkei – or unidentified comparable form
  • †Verrucosisporites
    • †Verrucosisporites cerosus
    • †Verrucosisporites donarii
    • †Verrucosisporites henshawensis
    • †Verrucosisporites microtuberosus
    • †Verrucosisporites microtuerosus
    • †Verrucosisporites verrucosus
  • †Veryhachium
    • †Veryhachium roscidum
    • †Veryhachium trispinosoides
  • †Vesicaspora
    • †Vesicaspora wilsonii
  • †Vestispora
    • †Vestispora fenestrata
    • †Vestispora laevigata
  • †Vinella
  • †Vinlandostrophia
    • †Vinlandostrophia acutilirata
    • †Vinlandostrophia ponderosa
  • †Vorticina
    • †Vorticina cyrtolites

W
  • †Waagenella
    • †Waagenella crassus
  • Fossilized foliage of the Carboniferous-Permian conifer Walchia
    †Walchia
  • †Walchiostrobus
  • †Walliserodus
    • †Walliserodus sancticlairi
  • †Welleria – tentative report
  • †Westonoceras
  • †Whidbornella
  • †Whiteavesia
  • †Whitfieldella
  • †Whitfieldoceras
  • †Wilkingia
    • †Wilkingia andrewsi
    • †Wilkingia maxvillensis
    • †Wilkingia terminale
  • †Wilsonites
    • †Wilsonites vesicatus
  • †Worthenia
    • †Worthenia parvula
    • †Worthenia speciosa
    • †Worthenia strigillata
    • †Worthenia tabulata
  • †Wurmiella
    • †Wurmiella excavata

X
  • †Xenocrinus
  • Illustration of a fossil of the Carboniferous millipede Xyloiulus
    †Xyloiulus
    • †Xyloiulus bairdi – type locality for species
  • †Xysmacrinus
    • †Xysmacrinus greenensis

Z
  • †Zascinaspis
  • †Zirocrinus
    • †Zirocrinus litos
  • †Zittelloceras
  • †Zonalosporites
    • †Zonalosporites ellipticus
  • Fossil of the feeding trace ichnogenus Zoophycos
    †Zoophycos
  • †Zygocycloides
    • †Zygocycloides magnus
  • †Zygospira
    • †Zygospira cincinnatiensis
    • †Zygospira modesta
gollark: ++exec -L c-gcc```cchar[1024] buf;int main(int apiohazard, char* *apioform) {// char *buf = (char*)"APIONODE\0\0\0\0"; printf("out: %s", buf); return 0;}```
gollark: I see.
gollark: ++exec -L c-gcc```cint main(int apiohazard, char* *apioform) { char *buf = (char*)"APIONODE\0\0\0\0"; printf("out: %s", buf); return 0;}```
gollark: I assume it's not automatically zeroed.
gollark: Doesn't USING it mean UB?

References
  1. Ciurca, Samuel J.; Tetlie, O. Erik (2007). "Pterygotids (Chelicerata; Eurypterida) from the Silurian Vernon Formation of New York". Journal of Paleontology. 81 (4): 725–736. doi:10.1666/pleo0022-3360(2007)081[0725:PEFTSV]2.0.CO;2. ISSN 0022-3360.
  2. Dunlop, J. A., Penney, D. & Jekel, D. 2015. A summary list of fossil spiders and their relatives. In World Spider Catalog. Natural History Museum Bern, online at http://wsc.nmbe.ch, version 18.5 http://www.wsc.nmbe.ch/resources/fossils/Fossils18.5.pdf (PDF).

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