List of the Paleozoic life of Iowa

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

A
  • †Abatocrinus
  • †Acidaspis
  • †Aclisina
  • Fossilized calyx and partial stem of the Devonian-Permian crinoid ("sea lily") Actinocrinites
    †Actinocrinites
    • †Actinocrinites gibsoni
    • †Actinocrinites jugosus
    • †Actinocrinites lowei
    • †Actinocrinites pernodosus
    • †Actinocrinites probolos
  • †Actinopteria – tentative report
  • †Actinostroma
    • †Actinostroma clathratum
  • †Acutatheca
    • †Acutatheca propira
  • †Adocetocystis
  • †Adolfia
  • †Aechmina
    • †Aechmina cuspidata
    • †Aechmina ionensis
    • †Aechmina maquiketensis
    • †Aechmina taurea
  • †Agassizodus
    • †Agassizodus variabilis
  • †Agelacrinites
  • †Aglaocrinus
    • †Aglaocrinus compactus
  • †Allanella
    • †Allanella allani
    • †Allanella annae
    • †Allanella cardinalis
  • †Allenella
    • †Allenella allani
    • †Allenella annae
  • †Allocrinus
    • †Allocrinus ornatus
    • †Allocrinus subglobosus
  • †Allorhynchus
    • †Allorhynchus currei – or unidentified comparable form
  • †Allozygocrinus
    • †Allozygocrinus dubuquensis
  • †Alveolites
  • †Ambocoelia
    • †Ambocoelia louisianaensis
    • †Ambocoelia minuta
  • †Ambonychia
  • †Americoncha
    • †Americoncha marginata
  • †Amphicoelia
  • †Amphicyrtoceras
  • †Amphipora
    • †Amphipora pervesiculata
  • †Amplexus
  • †Anartiocystis
  • †Anastrophia
  • †Anataphrus
  • †Anematina
    • †Anematina conica
  • †Angyomphalus
    • †Angyomphalus lens
    • †Angyomphalus penelenticulata – type locality for species
  • †Anisotrypa
  • †Anomphalus
  • †Anthracospirifer
    • †Anthracospirifer pellaensis
  • †Antiquatonia
  • †Antirhynchonella
  • †Antirotella
    • †Antirotella kindlei – type locality for species
  • †Aorocrinus
  • †Aparchites
    • †Aparchites barbatus
    • †Aparchites carinatus
    • †Aparchites chatfieldensis
    • †Aparchites ellipticus
    • †Aparchites fimbriatus
    • †Aparchites macrus
    • †Aparchites paratumida
  • †Aphelecrinus
  • †Apycnodiscus
  • †Arabellites
  • †Arachnophyllum
  • †Archaeocalyptocrininus
    • †Archaeocalyptocrininus iowensis
    • †Archaeocalyptocrininus nodosus
  • †Archaeocalyptocrinus
    • †Archaeocalyptocrinus iowensis
    • †Archaeocalyptocrinus nodosus
  • †Archaeocrinus
    • †Archaeocrinus obconicus
  • †Archaeogastropod
  • †Archinacella
    • †Archinacella rotunda
  • Fossil of the Silurian trilobite Arctinurus
    †Arctinurus
  • †Arctomeristina
  • †Arisaigia
  • †Arrectocrinus
    • †Arrectocrinus iowensis
  • †Arthroxylon
  • †Asphaltinella
  • †Asterophyllites
    • †Asterophyllites multifolia
  • †Asthenophyllum
  • †Astraeospongium
  • †Astreptodictya
  • †Astrocystites
    • †Astrocystites ottawaensis – tentative report
  • †Atelodictyon
    • †Atelodictyon masoncityense – type locality for species
  • †Athyris
    • †Athyris cedarensis
    • †Athyris crassicardinalis
    • †Athyris fultonensis – or unidentified comparable form
    • †Athyris simplex
    • †Athyris spiriferiodes
    • †Athyris vitatta
    • †Athyris vittata
    • †Athyris zonulata
  • †Atribonium
    • †Atribonium nora
    • †Atribonium paupera
    • †Atribonium prolifica
    • †Atribonium subovata
    • †Atribonium swallovi
  • †Atrypa
  • †Atryparia
    • †Atryparia varicostata
  • †Atrypoidea
  • †Aulacella
  • †Aulocopella
    • †Aulocopella dactylos – type locality for species
    • †Aulocopella probolos – type locality for species
    • †Aulocopella scelidos – type locality for species
  • †Aviculopecten
    • †Aviculopecten marbuti – or unidentified comparable form

B
  • Bairdia
  • †Bairdiocypris
    • †Bairdiocypris granti
  • †Bairdocypris
    • †Bairdocypris granti
  • †Basseleratia
    • †Basseleratia typa
  • †Bassleratia
    • †Bassleratia typa
  • †Batostomella
  • †Baylea
    • †Baylea trifibra – type locality for species
  • †Beecheria
    • †Beecheria chouteauensis
  • †Belemnocrinus
  • Fossilized shell of the Silurian-Early Triassic mollusc Bellerophon
    †Bellerophon
    • †Bellerophon blairi
    • †Bellerophon panneus
    • †Bellerophon patersoni
    • †Bellerophon vinculatus
  • †Bellornatia
    • †Bellornatia tricollis
  • †Belodina
    • †Belodina compressa
  • †Beloitoceras – tentative report
    • †Beloitoceras discrepana
  • †Bembexia
    • †Bembexia minima
  • †Bensbergia
    • †Bensbergia pulchra – type locality for species
  • †Beyrichia
    • †Beyrichia irregularis
  • †Bighornia
  • †Blothrocrinus
  • †Bobbodus
    • †Bobbodus schaefferi
  • †Bolicrinus
    • †Bolicrinus deflatus
    • †Bolicrinus globosus
  • †Bollia
    • †Bollia regularis
    • †Bollia ruthae
    • †Bollia subaequata
  • Reconstructive diagram (left) of a fossil (right) of the Ordovician sea urchin Bothriocidaris. The short spines which were attached to the tubercles are not drawn.
    †Bothriocidaris
    • †Bothriocidaris maquoketensis
  • †Botryocrinus
    • †Botryocrinus thomasi – type locality for species
  • †Brachythyris
    • †Brachythyris burlingtonensis – or unidentified comparable form
    • †Brachythyris chouteauensis
    • †Brachythyris peculiaris
  • †Brachytomaria
    • †Brachytomaria semele
  • †Breviphillipsia
  • †Brockocystis
    • †Brockocystis nodosaria
  • †Bromidella
    • †Bromidella depressa
    • †Bromidella rhomboides
  • †Bryantodina
    • †Bryantodina typicalis
  • †Bucanella
    • †Bucanella conradi
  • †Bucanopsis
    • †Bucanopsis lirata
  • †Bullatekka
    • †Bullatekka granilabiatus
  • †Bullatella
    • †Bullatella granilabiatus
  • Life restoration of the Early Ordovician-Silurian trilobite Bumastus
    †Bumastus
  • †Buranella
  • †Buxtonia – tentative report
  • †Byrsolopsina
    • †Byrsolopsina centipunctata
    • †Byrsolopsina normella
    • †Byrsolopsina ovata
    • †Byrsolopsina planilateralis
  • Bythocypris
    • †Bythocypris curta
    • †Bythocypris furnishi

C
  • †Caenanoplia
    • †Caenanoplia logani
  • †Calamocarpon
    • †Calamocarpon insignis
  • †Calceocrinus
    • †Calceocrinus levorsoni
  • †Calcisphaera
    • †Calcisphaera laevis
  • †Calliocrinus
    • †Calliocrinus longispinus
  • †Callocrinus
    • †Callocrinus longispinus
  • †Callocystites
  • †Calvinaria
    • †Calvinaria ambigua
    • †Calvinaria bransoni
  • †Calvustrigis – tentative report
  • Fossil of the Early Ordovician-Early Devonian trilobite Calymene
    †Calymene
  • †Camarophorella
    • †Camarophorella lenticularis
  • †Camarotoechia
    • †Camarotoechia chemungensis
    • †Camarotoechia chouteauensis
    • †Camarotoechia crassiplicata
    • †Camarotoechia perplexa
    • †Camarotoechia quadricostatum
    • †Camarotoechia saxatilis
    • †Camarotoechia saxatillis
    • †Camarotoechia tuta
  • †Camerella
  • †Carabocrinus
    • †Carabocrinus radiatus
    • †Carabocrinus slocomi
  • †Cardiola
    • †Cardiola lyoni
  • †Carinatrypa
    • †Carinatrypa dysmorphstrota
  • †Cariniferella
    • †Cariniferella iowensis
  • †Carpocrinus
    • †Carpocrinus bodei
  • †Caryocrinites
  • Fossil of the Ordovician-Silurian tabulate coral Catenipora
    †Catenipora
  • †Ceratocephala
  • †Ceratopsis
    • †Ceratopsis humilinoda
    • †Ceratopsis quadrifida
    • †Ceratopsis trilobis
  • †Ceraurus
  • †Cerithioides
    • †Cerithioides judiae
  • †Characterophyllum
    • †Characterophyllum nanum
  • †Charactoceras
  • †Charactophyllum
    • †Charactophyllum nanum
  • †Charionella
    • †Charionella nortoni
  • Fossil of the Cambrian-Middle Devonian trilobite Cheirurus
    †Cheirurus
  • †Chomatodus
    • †Chomatodus inconstans
  • †Chonetes
    • †Chonetes glenparkensis
    • †Chonetes illinoisensis
    • †Chonetes logani
    • †Chonetes multicosta
    • †Chonetes multicostata
    • †Chonetes ornatus
  • †Chonetina
  • †Chonetinella
  • †Chonetipustula
    • †Chonetipustula concentrica
  • †Chonopectus
    • †Chonopectus fischeri
  • †Chonophyllum
  • †Clathrocoilona
    • †Clathrocoilona involuta – type locality for species
  • †Clathrodictyon
  • †Cleiocrinus
    • †Cleiocrinus regius
  • †Cleiothyridina
    • †Cleiothyridina crassicardinalis – or unidentified related form
    • †Cleiothyridina glenparkensis – or unidentified comparable form
    • †Cleiothyridina incrassata – or unidentified comparable form
    • †Cleiothyridina sublamellosa
  • †Climacoconus
    • †Climacoconus pumilus
  • Assemblage of fossils of the Cambrian graptolite Climacograptus
    †Climacograptus
    • †Climacograptus pumilis
    • †Climacograptus typicalis
  • †Clinolithes
  • †Clinopistha
  • †Clintonella – tentative report
  • †Clorinda
  • †Cochliodus
    • †Cochliodus occidentalis
  • †Coelospira
  • †Coeloterorhynchus
    • †Coeloterorhynchus schucherti
    • †Coeloterorhynchus subacuminata
    • †Coeloterorhynchus subacuminatus
  • †Coenites
  • †Composita
    • †Composita humilis – tentative report
    • †Composita immatura – or unidentified comparable form
    • †Composita trinuclea
  • †Compsocrinus
  • †Concavicaris
    • †Concavicaris sinuata – or unidentified comparable form
  • †Conocardium
  • †Conotreta
  • †Conularia
  • †Coolinia
  • Fossil of the Middle Ordovician-Carboniferous horn coral Cornulites
    †Cornulites
  • †Costistricklandia
    • †Costistricklandia castellana
    • †Costistricklandia multilirata
  • †Cotylacrina
    • †Cotylacrina sandra
  • †Cranaena
    • †Cranaena amana
    • †Cranaena arcuosa
    • †Cranaena calvini
    • †Cranaena depressa
    • †Cranaena elia
    • †Cranaena famelica
    • †Cranaena inflata
    • †Cranaena infrequens
    • †Cranaena iowensis
    • †Cranaena jacunda
    • †Cranaena lata
    • †Cranaena littleonensis
    • †Cranaena littletonensis
    • †Cranaena maculata
    • †Cranaena marsii
    • †Cranaena micula
    • †Cranaena navicella
    • †Cranaena occidentalis
    • †Cranaena pachytesta
    • †Cranaena parvirostra
    • †Cranaena rhomboidialis
    • †Cranaena rockfordensis
    • †Cranaena romingeri
    • †Cranaena seminula
    • †Cranaena subcylindrica
    • †Cranaena subglobosa
    • †Cranaena subglossa
    • †Cranaena subgobulosa
    • †Cranaena subouata
    • †Cranaena subovata
    • †Cranaena thomasi
  • †Cranaenella
  • †Crania
    • †Crania famelica
  • †Crassiproetus
    • †Crassiproetus arietinus
    • †Crassiproetus bumastoides
    • †Crassiproetus occidens
    • †Crassiproetus searighti
  • †Cremacrinus
    • †Cremacrinus gerki
    • †Cremacrinus guttenbergensis
    • †Cremacrinus punctatus – or unidentified related form
    • †Cremacrinus type locality for species – informal
  • †Cribanocrinus
  • †Crotalocrinintes
  • Fossilized stem segments of the Silurian crinoid ("sea lily") Crotalocrinites
    †Crotalocrinites
  • †Crurithyris
  • †Cryptophyllus
    • †Cryptophyllus oboloides
    • †Cryptophyllus sulcatus
  • †Ctenobolbina
    • †Ctenobolbina emaciata
    • †Ctenobolbina maquoketensis
  • †Ctenodonta
    • †Ctenodonta anatina
    • †Ctenodonta calvini
  • †Cupularostrum
    • †Cupularostrum contracta
    • †Cupularostrum saxatilis
    • †Cupularostrum saxatillis
  • †Cupulocorona
  • †Cupulocrinus
    • †Cupulocrinus angustatus
    • †Cupulocrinus conjugans – or unidentified related form
    • †Cupulocrinus crossmani
    • †Cupulocrinus latibrachiatus – or unidentified related form
  • †Curtognathus
  • †Cusacrinus
  • †Cyathaxonia
    • †Cyathaxonia arcuatus
  • Fossilized calyx and partial stem of the Silurian-Permian crinoid ("sea lily") Cyathocrinites
    †Cyathocrinites
  • †Cyathocrintes
    • †Cyathocrintes striatissimus – or unidentified comparable form
  • †Cyathophyllum
  • †Cyclendoceras
  • †Cyclocrinites
    • †Cyclocrinites dactilioides
    • †Cyclocrinites dactioloides
  • †Cyclocystoides
  • †Cyclonema
    • †Cyclonema bilix
    • †Cyclonema minuta
  • †Cyclora
  • †Cynopodius
  • †Cyphaspis
  • †Cypricardella
  • †Cypricardinia
    • †Cypricardinia sulcifera
  • †Cyrtia
    • †Cyrtia exporrecta
  • †Cyrtina
    • †Cyrtina inulta
    • †Cyrtina iowaensis
    • †Cyrtina triquetra
    • †Cyrtina umbonata
  • †Cyrtodonta
  • †Cyrtolites
  • †Cyrtospira
  • Fossilized shells of the Middle-Late Devonian brachiopod Cyrtospirifer
    †Cyrtospirifer
    • †Cyrtospirifer disjunctus
    • †Cyrtospirifer whitneyi
  • †Cystiphyllum
    • †Cystiphyllum mundulum
  • †Cystodictya
  • †Cytocrinus

D
  • †Dalejina
  • †Dalmanella
    • †Dalmanella edgewoodensis – or unidentified comparable form
  • Fossil of the Late Ordovician-Middle Devonian trilobite Dalmanites
    †Dalmanites
  • †Dapsilodus
    • †Dapsilodus mutatus
  • †Dawsonoceras
  • †Decadocrinus
    • †Decadocrinus crassidactylus – type locality for species
    • †Decadocrinus pachydactylus – type locality for species
    • †Decadocrinus spinulifer – type locality for species
  • †Decaschisma
  • †Dechenella
    • †Dechenella haldemani – or unidentified comparable form
    • †Dechenella nortoni
    • †Dechenella prouti
    • †Dechenella rowi – or unidentified comparable form
  • Life restoration of two species of the Silurian trilobite Deiphon
    †Deiphon
  • †Delocrinus
    • †Delocrinus vulgatus
  • †Deltaherpeton – type locality for genus
    • †Deltaherpeton hiemstrae – type locality for species
  • †Delthyris – tentative report
  • †Deltodus
    • †Deltodus spatulatus
  • †Dendrocrinus
    • †Dendrocrinus casei
    • †Dendrocrinus curvijunctus – or unidentified related form
    • †Dendrocrinus oswegoensis
  • Shell of a Dentalium tusk shell
    †Dentalium
    • †Dentalium grandaevum
  • †Derbyia
  • †Desquamatia
    • †Desquamatia brandonensis
    • †Desquamatia independensis
    • †Desquamatia randalia
    • †Desquamatia rotunda
    • †Desquamatia rusica
    • †Desquamatia scutiformis
    • †Desquamatia waterlooensis
  • †Devonatrypa
    • †Devonatrypa brandonensis
    • †Devonatrypa pronis
    • †Devonatrypa trowbridgei
    • †Devonatrypa waterlooensis
  • †Devonochonetes
    • †Devonochonetes calivini
  • †Devonoproductus
    • †Devonoproductus reticulocostus
    • †Devonoproductus vulgaris
    • †Devonoproductus walcotti
  • †Diamphidiocystis
  • †Diceromyonia
  • †Dichacaenia
    • †Dichacaenia harberti
  • †Dichocrinus
  • †Dicoelosia
  • †Dicranella
    • †Dicranella bicornis
    • †Dicranella marginata
    • †Dicranella simplex
    • †Dicranella spinosa
    • †Dicranella typa
  • †Dicranopeltis
  • †Dictyoclostus
  • †Dictyotomaria
    • †Dictyotomaria quasicapillaria – type locality for species
  • †Dielasma
    • †Dielasma burlingtonensis
    • †Dielasma chouteauensis
    • †Dielasma formosum
  • †Dimerocrinites
    • †Dimerocrinites hopkintonensis
    • †Dimerocrinites pentangularis
    • †Dimerocrinites sculptus
  • †Dinobolus
  • †Dinolobus
  • †Dinorthis
  • †Diopatraites
  • †Diphyphyllum
  • †Diploblastus
    • †Diploblastus glaber
  • Cambrian graptolite Diplograptus
    †Diplograptus
    • †Diplograptus modestus – or unidentified comparable form
  • †Diplophyllum
  • †Diplosphaerina
    • †Diplosphaerina inaequalis
  • †Discosorus
  • †Disphyllum
    • †Disphyllum conjugans – type locality for species
    • †Disphyllum dispassum
    • †Disphyllum floydense
    • †Disphyllum iowensis – type locality for species
    • †Disphyllum tubiforme
  • †Dolerorthis
  • †Donaldina – tentative report
  • †Dorycrinus
    • †Dorycrinus gouldi
    • †Dorycrinus mississippiensis
  • †Douvillina
    • †Douvillina arcuata
    • †Douvillina cayuta
    • †Douvillina delicata
    • †Douvillina distans
    • †Douvillina maxima
    • †Douvillina navicula
    • †Douvillina oxycostratum
    • †Douvillina variabilis
  • †Douvillinaria
    • †Douvillinaria delicata
    • †Douvillinaria perversa
    • †Douvillinaria variabilis
    • †Douvillinaria variablis
  • †Drepanoistodus
    • †Drepanoistodus suberectus
  • †Dudleyaspis
  • †Dvorakia
    • †Dvorakia chattertoni – type locality for species

E
  • †Earlandia
  • †Ecclimadictyon
    • †Ecclimadictyon fastigiatum
  • †Echinocoelia
    • †Echinocoelia halli
  • †Echinoconchus
  • †Ectenocrinus
    • †Ectenocrinus raymondi
    • †Ectenocrinus simplex
  • †Ectodemites
    • †Ectodemites primus
  • †Ectogrammysia
    • †Ectogrammysia hannibalensis
  • Life restoration of the Late Devonian-Carboniferous Chimaera relative Edestus
    †Edestus
    • †Edestus crenulata
    • †Edestus mirus – type locality for species
  • †Edmondia
    • †Edmondia jejunus
  • †Eldredgeops
    • †Eldredgeops rana
  • †Eleutherokomma
    • †Eleutherokomma jasperensis
  • †Elita
    • †Elita diversa
    • †Elita inconsueta
    • †Elita johnsonensis
    • †Elita minor
    • †Elita subundifera
    • †Elita urbana
  • †Ellesmeria
    • †Ellesmeria scobeyi
  • †Ellesmeroceras
    • †Ellesmeroceras luthei
    • †Ellesmeroceras thomasi
  • †Emanuella
    • †Emanuella ii – report made of unidentified related form or using admittedly obsolete nomenclature
    • †Emanuella meristoides
    • †Emanuella sublineata
  • †Emphereaster
    • †Emphereaster missouriensis
  • †Encrinurus
  • Fossilized shells and restored appearances of the Middle-Late Ordovician nautiloid cephalopod Endoceras
    †Endoceras
  • †Endostaffella
    • †Endostaffella discoidea
  • †Endothyra
    • †Endothyra obsoleta – tentative report
  • †Endothyranella
  • †Enoploura
    • †Enoploura wetherbyi
  • †Enteletes
  • †Entelophyllum
  • Eocaudina
    • †Eocaudina septaforaminalis – type locality for species
  • †Eochonetes
    • †Eochonetes aspera
    • †Eochonetes dignata – type locality for species
    • †Eochonetes recedens
  • †Eodictyonella
  • †Eolissochonetes
  • †Eomartiniopsis
    • †Eomartiniopsis rostrata
  • †Eoparisocrinus
    • †Eoparisocrinus crossmani
  • †Eophacops
  • †Eoplectodonta
  • †Eoschmidtella
    • †Eoschmidtella umbonata
  • †Eospirifer
    • †Eospirifer radiatus
  • †Eospirigerina
    • †Eospirigerina putilla – or unidentified comparable form
  • †Eostrophalosia
    • †Eostrophalosia independensis
    • †Eostrophalosia inexpectans
    • †Eostrophalosia rockfordensis
  • †Eosyringothyris
    • †Eosyringothyris aspera
    • †Eosyringothyris occidentalis
    • †Eosyringothyris thomasi
    • †Eosyringothyris triangularis
  • †Ephippiorthoceras
  • †Eridoconcha
    • †Eridoconcha gibbera
    • †Eridoconcha punctata
  • †Eridotrypa
  • †Erismacanthus
    • †Erismacanthus barbatus
  • †Erismodus
    • †Erismodus radicans
  • †Escharopora
  • Fossilized calyx of the Silurian-Middle Devonian crinoid ("sea lily") Eucalyptocrinites
    †Eucalyptocrinites
    • †Eucalyptocrinites depressus
    • †Eucalyptocrinites inornatus
    • †Eucalyptocrinites ornatus – or unidentified comparable form
    • †Eucalyptocrinites proboscidalis
  • †Eukloedenella
    • †Eukloedenella richmondensis
  • †Eumetria
    • †Eumetria iowensis
    • †Eumetria osagensis
  • †Eumorphocystis
  • †Eunema
    • †Eunema quadrisulcata
  • Fossilized shell of the Silurian-Permian sea snail Euomphalus
    †Euomphalus
    • †Euomphalus angularis
    • †Euomphalus obtusus
  • †Euphemites
    • †Euphemites lentiformis
    • †Euphemites urei
  • †Euprimitia
    • †Euprimitia celata
    • †Euprimitia flores
    • †Euprimitia labiosa
    • †Euprimitia linepunctata
    • †Euprimitia minuta
    • †Euprimitia sanctipauli
  • †Euptychocrinus
    • †Euptychocrinus skopaios
  • †Eurychilina
    • †Eurychilina incurva
    • †Eurychilina minutifoveata
    • †Eurychilina partifimbriata
    • †Eurychilina reticulata
    • †Eurychilina subradiata
    • †Eurychilina ventrosa
  • †Eutaxocrinus
    • †Eutaxocrinus gracilis
  • †Exocrinus
    • †Exocrinus multirami

F
  • †Fardenia – tentative report
  • †Favosites
  • †Fenestella
  • †Fenestrellina
  • †Ferganella
  • †Fistulipora
  • †Flabellitesia
    • †Flabellitesia flabellites
  • Front (left) and right side (right) views of an enrolled fossil of the Middle Ordovician-Silurian trilobite Flexicalymene
    †Flexicalymene
  • †Floweria
    • †Floweria altirostris
    • †Floweria orthoplicata
    • †Floweria prava
  • †Floyda
    • †Floyda concentrica
  • †Fourstonella

G
  • †Galateacrinus
    • †Galateacrinus gossameri
  • †Gilmocrinus
  • †Girtyella
    • †Girtyella indianse
  • †Glabrocingulum
    • †Glabrocingulum angulosa – type locality for species
    • †Glabrocingulum minutum – type locality for species
  • †Glaphyrites
  • †Glossites
  • †Glyptorthis
    • †Glyptorthis pulchra – type locality for species
    • †Glyptorthis subcircularis – type locality for species
  • †Gomphocystites
  • Fossilized shell of the Late Devonian-Late Triassic ammonoid cephalopod Goniatites
    †Goniatites
  • †Goniocrinus
  • †Goniophyllum
    • †Goniophyllum pyramidale
  • †Gorgonophontes
    • †Gorgonophontes peleron
  • †Graffhamicrinus
    • †Graffhamicrinus magnijkus
    • †Graffhamicrinus subcoronatus
  • †Grammysia
    • †Grammysia amygdalinus
  • †Gravicalymene
  • †Greenops
    • †Greenops barrisi
    • †Greenops fitzpatricki
  • Multiple views of a fossil of the Ordovician horn coral Grewingkia
    †Grewingkia
  • †Gypidula
    • †Gypidula cornuta
    • †Gypidula munda
    • †Gypidula occidentalis
    • †Gypidula papyracea
    • †Gypidula parva
  • †Gypidulina
  • †Gyroceras

H
  • †Hadrorhynchia
    • †Hadrorhynchia solon
  • †Haeretocrinus
    • †Haeretocrinus missouriensis
  • †Hagnocrinus
  • †Hallatia
    • †Hallatia convexa
    • †Hallatia duplicata
    • †Hallatia particylincrica
    • †Hallatia particylindrica
  • †Hallicystis
  • †Halliella
    • †Halliella magnipunctata
  • Fossil of the Ordovician bryozoan ("moss animal") Hallopora
    †Hallopora
  • †Halysiocrinus
    • †Halysiocrinus barrisi
    • †Halysiocrinus elephantinus – type locality for species
  • †Halysites
  • †Hammatostroma
    • †Hammatostroma albertense
  • †Harpidella – tentative report
    • †Harpidella brandonensis
  • †Harpidium
    • †Harpidium luckeyensis – or unidentified related form
    • †Harpidium maquoketa
  • †Hedeina
  • †Heliolites
  • Fossil of the Middle Devonian horn coral Heliophyllum
    †Heliophyllum
    • †Heliophyllum solidum
  • †Helliella
    • †Helliella magnipunctata
  • †Hemicystites
  • †Hemiphragma
  • †Hemiplethorhynchus
    • †Hemiplethorhynchus subovatum
  • †Hermatostroma
    • †Hermatostroma polymorphum
  • †Hernodia
  • †Hesperidella
    • †Hesperidella initialis
  • Fossil of the Devonian colonial rugose coral Hexagonaria, also known as a Petoskey stone
    †Hexagonaria
    • †Hexagonaria bassleri
    • †Hexagonaria inequalis
    • †Hexagonaria oweni
    • †Hexagonaria whitfieldi
  • †Hibbardella
    • †Hibbardella subacoda
  • †Hindella
  • †Hindia
    • †Hindia parva – tentative report
    • †Hindia sphaeroidalis
  • †Holcocrinus
  • Fossilized shells of the Ordovician-Carboniferous sea snail Holopea
    †Holopea
    • †Holopea iowaensis
  • †Homacanthus
    • †Homacanthus delicatulus
  • †Homoeospira
  • †Homotrypella
  • †Hormotoma
    • †Hormotoma gracilis
  • †Howellella
  • †Hudsonaster
  • †Huronia
  • †Hustedia
  • †Hyattidina
  • †Hybocrinus
    • †Hybocrinus conicus
Fossilized shells of the Cambrian-Permian brachiopod relative Hyolitha

†Hyolithes

    • †Hyolithes parviusculus
  • †Hypergonia
    • †Hypergonia percarinata
  • †Hypothyridina
    • †Hypothyridina emmonsi
    • †Hypothyridina intermedia
    • †Hypothyridina magister
  • †Hypselocrinus
  • †Hypsitycha
    • †Hypsitycha hybrida
  • †Hysitycha
    • †Hysitycha neenah
  • †Hystriculina

I
  • †Ianthinopsis
    • †Ianthinopsis pinguis – type locality for species
  • †Icriodus
    • †Icriodus calvini – type locality for species
    • †Icriodus latericrescens
    • †Icriodus nodosus
    • †Icriodus orri – type locality for species
    • †Icriodus subterminus
  • †Icthyocrinus
  • †Idiognathodus
    • †Idiognathodus attenuatus – type locality for species
    • †Idiognathodus claviformis
    • †Idiognathodus iowaensis – type locality for species
  • †Ignoceras
    • †Ignoceras undata
  • †Indospirifer
    • †Indospirifer orestes
  • Life restoration of the Carboniferous Chimaera relative Iniopteryx
    †Iniopteryx
    • †Iniopteryx rushlaui
    • †Iniopteryx tedwhitei
  • †Iocrinus
  • †Iowacystis
    • †Iowacystis sagittaria
  • †Iowaphyllum
    • †Iowaphyllum johanni
  • †Iowatrypa
    • †Iowatrypa americana
    • †Iowatrypa owenensis
  • †Ischadites
  • †Isorthis
  • †Isorthoceras
    • †Isorthoceras sociale
  • Fossil of the Middle-Late Ordovician giant trilobite Isotelus.
    †Isotelus

J

K
  • †Kaskia
  • †Kayoceras
  • †Kiesowia
    • †Kiesowia binoda
    • †Kiesowia insolens
  • †Kinocrinus
    • †Kinocrinus inflatus
  • Fossilized shells of the Middle Ordovician-Permian nautiloid cephalopod Kionoceras
    †Kionoceras
    • †Kionoceras decorahense – type locality for species
  • †Kirkidium
  • †Kitikamispira – tentative report
    • †Kitikamispira perstrialis – type locality for species
  • †Knightella
    • †Knightella shumardiana – type locality for species
  • †Kosovopeltis
    • †Kosovopeltis acamas
  • †Krausella
    • †Krausella arcuata
    • †Krausella curtispina
    • †Krausella inaequalis
  • †Krinocrinus
    • †Krinocrinus inflatus

L
  • †Laccoprimitia
    • †Laccoprimitia elegantula
    • †Laccoprimitia fillmorensis
  • †Lacertasterias – type locality for genus
    • †Lacertasterias elegans – type locality for species
  • †Laddella
    • †Laddella insueta
  • †Ladogioides
    • †Ladogioides solon
  • Laevidentalium
  • †Lamottia
    • †Lamottia heroensis
  • †Lampterocrinus
  • †Lanecrinus – tentative report
  • †Leangella
  • †Lecanocrinus
  • †Lecathylus
    • †Lecathylus gregarius
  • †Lechritochoceras
  • †Leioclema
    • †Leioclema occidens
  • †Leiorhynchus
    • †Leiorhynchus argenteum
    • †Leiorhynchus gosseleti
    • †Leiorhynchus iris
  • †Leperditella
    • †Leperditella dorsicornis
    • †Leperditella fryei
    • †Leperditella macra
    • †Leperditella millepunctata
    • †Leperditella persimilis
    • †Leperditella sacceliformis
  • †Leperditia
  • †Lepidocyclus
  • †Lepidoleptaena – or unidentified related form
  • †Leptaena
    • †Leptaena rhomboidalis
  • †Leptagonia
    • †Leptagonia analoga
  • †Leptellina
  • †Leptobolus
    • †Leptobolus occidentalis
  • †Leptodesma
    • †Leptodesma acutilaris
    • †Leptodesma subovata
  • †Leptopora
    • †Leptopora typa
  • †Leptoptygma
    • †Leptoptygma oligospira – type locality for species
  • †Leptostrophia – tentative report
  • †Leptotrypella
  • †Lichenalia
  • †Lichenocrinus
  • Shell of the Cambrian-modern brachiopod Lingula
    †Lingula
    • †Lingula changi
    • †Lingula cuneata
    • †Lingula fragila
    • †Lingula milwaukeensis – or unidentified comparable form
    • †Lingula milwaukiensis
  • †Lingulodiscina
    • †Lingulodiscina marginalis
  • †Linocrinus
  • †Linoporella
  • †Linoproductus
    • †Linoproductus ovatus
  • †Liospira
    • †Liospira micula
    • †Liospira spicula – or unidentified comparable form
  • †Litostrobus
    • †Litostrobus iowensis
    • †Litostrobus paulus
  • †Lonchodus – tentative report
  • †Lophophyllidium
  • †Lophospira
    • †Lophospira depauperata
  • †Lorangerella
    • †Lorangerella gregaria
  • †Loxonema
  • †Lumbriconereites
  • †Luxocrinus
    • †Luxocrinus simplex
  • †Lyonicrinus
  • †Lyriocrinus
  • †Lysocystites
    • †Lysocystites nodosus
  • †Lytospira

M
  • †Macgeea
    • †Macgeea camplanulata – type locality for species
    • †Macgeea concinnula – type locality for species
    • †Macgeea culmula
    • †Macgeea solitaria
  • †Macrocrinus
    • †Macrocrinus mundulus
  • Macrocypris
    • †Macrocypris kayi
  • †Macrocyproides
    • †Macrocyproides clermontensis
  • †Macronotella
    • †Macronotella arcta
    • †Macronotella scofeldi
    • †Macronotella scofieldi
  • †Macropotamorhynchus
    • †Macropotamorhynchus tuta
  • †Macrostylocrinus
    • †Macrostylocrinus compressus
    • †Macrostylocrinus obpyramidalis – or unidentified comparable form
    • †Macrostylocrinus vermiculatus
  • †Manicrinus
  • Fossilized shell of the Devonian ammonoid cephalopod Manticoceras
    †Manticoceras
    • †Manticoceras regulare
  • †Manticrinus
  • †Maquoketacrinus
    • †Maquoketacrinus ornatus
  • †Maratia
    • †Maratia mara
    • †Maratia micula
  • †Marsupiocrinus
    • †Marsupiocrinus primaevus
  • †Mediospirifer
  • †Megalomoidea
  • †Megamyonia
    • †Megamyonia unicostata
  • †Megastrophia
    • †Megastrophia profunda
  • †Megistocrinus
    • †Megistocrinus pernodosus
  • †Melocrinites
  • †Merista
  • Illustration (lower right, entry 15) of a fossilized shell in front and side views of the Silurian-Late Devonian brachiopod Meristella
    †Meristella
    • †Meristella parva
  • †Meristina
  • †Merocrinus
  • †Mesoblastus – or unidentified comparable form
  • †Mesolobus
  • †Metaconularia
  • †Metalonchodina
    • †Metalonchodina deflecta – type locality for species
  • †Michelia
  • †Michelinoceras
  • †Microcardinalia
  • †Milleratia
    • †Milleratia cincinnatiensis
    • †Milleratia cincinnattiensis
  • †Mirifusella – type locality for genus
    • †Mirifusella fortunata – type locality for species
  • †Modiomorpha
  • †Monomerella
  • †Murchisonia
  • †Myalina
  • †Mycterops
    • †Mycterops whitei – type locality for species
  • †Myeinocystites
  • †Myelodactylus
  • †Mystrocephala
    • †Mystrocephala pulchra – or unidentified comparable form
    • †Mystrocephala raripustulosus
  • †Mytilarca

N
  • †Nactocrinus
  • †Nalivkinia – tentative report
  • †Nataliana – type locality for genus
    • †Nataliana sinuata – type locality for species
  • Fossilized shell of the Early Devonian – Triassic sea snail Naticopsis
    †Naticopsis
    • †Naticopsis depressa – type locality for species
  • †Neopanderodus
  • †Neospirifer
  • †Neozaphrentis
    • †Neozaphrentis pellaensis
  • †Nervostrophia
    • †Nervostrophia calvini
    • †Nervostrophia canace
    • †Nervostrophia contaderoensis
    • †Nervostrophia extensa
    • †Nervostrophia multinervosa
    • †Nervostrophia rockfordensis
    • †Nervostrophia solida
    • †Nervostrophia thomasi
  • †Newberria
    • †Newberria cordiforme
    • †Newberria johanni
  • †Ningulella
    • †Ningulella paucisulcata
  • †Nodambichilina
    • †Nodambichilina symmetrica
  • †Nucellangium
    • †Nucellangium glabrum
  • †Nucleospira
    • †Nucleospira barrisi
  • Interior of a fossilized shell of the Early Ordovician-modern marine bivalve Nucula
    Nucula
    • †Nucula glanparkensis
    • †Nucula iowensis
  • Nuculana
    • †Nuculana sacata
  • †Nuculites
    • †Nuculites neglectus
  • †Nuculopsis

O
  • †Odontopleura
  • †Oepikina
  • †Oistodus
    • †Oistodus venustus
  • †Onniella
    • †Onniella quadrata
  • Life restoration of the Middle-Late Devonian lobe-finned fish Onychodus
    †Onychodus
  • †Opikatia
    • †Opikatia emaciata
    • †Opikatia rotunda
  • †Opoa
  • †Orbiculoidea
    • †Orbiculoidea telleri
    • †Orbiculoidea varsoviensis
    • †Orbiculoidea wardi
  • †Orecopia
    • †Orecopia circinatus – type locality for species
  • †Oriostoma
  • †Orthoceras
    • †Orthoceras indianense
  • †Orthodesma
  • †Orthograptus
    • †Orthograptus eucharis
    • †Orthograptus truncatus
  • †Orthonychia
    • †Orthonychia vomerium
  • †Orthospirifer
    • †Orthospirifer capax
    • †Orthospirifer euruteines
    • †Orthospirifer iowensis
    • †Orthospirifer parryanus
  • †Orthotetes
    • †Orthotetes kaskaskiensis
  • †Otarion – tentative report
  • †Oulodus
    • †Oulodus abbreviata – type locality for species
    • †Oulodus serratus
  • †Ovatia
    • †Ovatia laevicostata
    • †Ovatia ovata
  • †Ozarkodina
    • †Ozarkodina campbelli – type locality for species
    • †Ozarkodina delicatula
    • †Ozarkodina raaschi

P
  • †Pachyphyllum
    • †Pachyphyllum crassicostatum
    • †Pachyphyllum dumonti – type locality for species
    • †Pachyphyllum gregarium
    • †Pachyphyllum minutissimum
    • †Pachyphyllum websteri
    • †Pachyphyllum woodmani
  • †Paladin
    • †Paladin wilsoni
  • †Palaeocapulus
    • †Palaeocapulus equilateralis
  • †Palaeoconcha
  • †Palaeocyclus
  • †Palaeoneilo
    • †Palaeoneilo barrisi
    • †Palaeoneilo fecunda
  • †Palaeostachys
    • †Palaeostachys andrewsii
  • †Palaeozygopleura
    • †Palaeozygopleura difficile
  • †Palmatolepis
    • †Palmatolepis foliacea
    • †Palmatolepis semichatovae
  • †Panderous
    • †Panderous gracilis
    • †Panderous panderi
  • †Parabolbina
    • †Parabolbina antecedans
    • †Parabolbina carinifera
    • †Parabolbina staufferi
  • †Paracosmetocrinus
  • †Paracyclas
    • †Paracyclas dubia
    • †Paracyclas dubius
    • †Paracyclas elliptica
    • †Paracyclas parvula
    • †Paracyclas paucipleura
    • †Paracyclas proavia
    • †Paracyclas sabini
    • †Paracyclas validalinea
    • †Paracyclas validelinea
  • †Paraphorhynchus
    • †Paraphorhynchus elongatum
    • †Paraphorhynchus striatocostatum
  • †Paraschmidtella
    • †Paraschmidtella irregularis
    • †Paraschmidtella uphami
  • †Parenthatia
    • †Parenthatia camerata
    • †Parenthatia punctata
  • †Patellilabia
    • †Patellilabia scriptiferus
  • †Paucicrura
    • †Paucicrura corpulenta
  • †Paupospira
  • Fossil of the Carboniferous crustacean Peachocaris
    †Peachocaris
    • †Peachocaris acanthouraea – type locality for species
  • †Pedomphalella
    • †Pedomphalella intermedia
    • †Pedomphalella subovata
  • †Pentamerella
    • †Pentamerella dubia
    • †Pentamerella laeviscula
    • †Pentamerella laeviuscula
    • †Pentamerella magna
    • †Pentamerella multicostella
    • †Pentamerella obsolescens
    • †Pentamerella rugosa
    • †Pentamerella subarata
  • †Pentameroides
    • †Pentameroides corrugatus
    • †Pentameroides subrectus
  • Fossilized shell of the Silurian-Middle Devonian brachiopod Pentamerus
    †Pentamerus
    • †Pentamerus oblongus
  • †Pentlandina
  • †Pentremites
    • †Pentremites pulchellus
  • †Perditocardinia
    • †Perditocardinia iowensis – type locality for species
  • †Periechocrinus
  • †Pernopecten
    • †Pernopecten cooperensis
  • †Petalocrinus
    • †Petalocrinus mirabilis
  • Fossilized tooth of the Carboniferous-Permian shark Petalodus
    †Petalodus
    • †Petalodus allegheniensis
  • †Petalotrypa
    • †Petalotrypa formosa
  • †Petrocrania
    • †Petrocrania famelica
    • †Petrocrania familica
  • †Petrodus
    • †Petrodus patelliformis
  • †Phacops
    • †Phacops iowensis
  • †Phanerotrema
  • †Philhedra
    • †Philhedra sheldoni
  • †Phillipsia
  • †Phoebodus
    • †Phoebodus densneptuni – type locality for species
  • †Pholidostrophia
    • †Pholidostrophia iowensis
  • †Phragmoceras
  • †Phragmodus
    • †Phragmodus cognitus
    • †Phragmodus undatus
  • †Phricodothyris
  • †Phymatopleura
  • †Physonemus
    • †Physonemus hamuspiscatorius
    • †Physonemus pandatus
  • †Piloricilla
    • †Piloricilla sedaliensis
  • †Pinnocaris
    • †Pinnocaris americana – type locality for species
  • †Pisocrinus
  • Fossilized shell of the Ordovician brachiopod Plaesiomys
    †Plaesiomys
    • †Plaesiomys subquadrata
  • †Plagioglypta
    • †Plagioglypta iowaensis
  • †Planalvus – type locality for genus
    • †Planalvus gibberosa – type locality for species
  • †Plasmopora
  • †Platyceras
    • †Platyceras antiquum
    • †Platyceras insolitum
    • †Platyceras irrasum
    • †Platyceras latum – tentative report
    • †Platyceras nasutum
    • †Platyceras paralium
  • Three fossilized calyces of the Devonian-Permian crinoid ("sea lily") Platycrinites
    †Platycrinites
  • †Platycrinus
  • †Platylichas
  • †Platyrachella
    • †Platyrachella ballardi
    • †Platyrachella macbridei
  • †Platyschisma
    • †Platyschisma barrisi
    • †Platyschisma depressa
    • †Platyschisma laudoni – type locality for species
  • †Platystrophia
    • †Platystrophia biforata
  • †Plectatrypa
  • †Plectodina
    • †Plectodina aculeata
  • †Plectodonta
    • †Plectodonta produla
  • Fossil of the Late Ordovician cystoid echinoderm Pleurocystites
    †Pleurocystites
    • †Pleurocystites beckeri
    • †Pleurocystites filitextus – tentative report
    • †Pleurocystites strimplei
  • Pleurotomaria – tentative report
    • †Pleurotomaria verticillata
  • †Plicochonetes
  • †Plicostricklandia
  • †Podolithus
  • †Poleumita
  • †Polusocrinus
    • †Polusocrinus rosa
  • Various conodont elements of Polygnathus
    †Polygnathus
    • †Polygnathus decorosus
    • †Polygnathus intermedius
    • †Polygnathus parawebbi
    • †Polygnathus xylus
  • †Polyplacognathus
    • †Polyplacognathus ramosus
  • †Polytryphocycloides
  • †Polytylites
    • †Polytylites wilsoni
  • †Porcellia
    • †Porcellia crassinoda
    • †Porcellia obliquinoda
    • †Porcellia rectinoda – type locality for species
  • †Porocrinus
    • †Porocrinus crassus
    • †Porocrinus fayettensis
    • †Porocrinus pentagonius
  • †Porpites
  • †Posidonia
  • †Praecupulocrinus
    • †Praecupulocrinus conjugans
  • †Praenucula – tentative report
  • †Praewaagenoconcha
    • †Praewaagenoconcha speciosa
  • †Prasopora
  • †Prasoporina
  • †Pregazacrinus
    • †Pregazacrinus hemisphericus
  • †Primitia
    • †Primitia gibbera
    • †Primitia spinata
  • †Primitiella
    • †Primitiella bellevuensis
    • †Primitiella carlei
    • †Primitiella constricta
    • †Primitiella milleri
    • †Primitiella plattevillensis
  • †Primitiopsis – tentative report
    • †Primitiopsis bella
  • †Primitopsis – tentative report
    • †Primitopsis bella
  • †Priscella
  • †Probillingsites
  • †Productella
    • †Productella belanskii
    • †Productella camerata
    • †Productella fragilis
    • †Productella iowa
    • †Productella linnensis
    • †Productella perplana
    • †Productella rugatula
    • †Productella sericea
    • †Productella subaculeata
    • †Productella subalata
    • †Productella thomasi
  • †Productus
    • †Productus arcuatus
    • †Productus ovatus
    • †Productus sedaliensis
  • †Proetides
    • †Proetides insignis
  • Restoration of the Silurian trilobite Proetus
    †Proetus
    • †Proetus channahonensis – or unidentified comparable form
  • †Promexyele
    • †Promexyele peyeri
  • †Prospira
    • †Prospira greenockensis – or unidentified related form
    • †Prospira legrandensis
  • †Protacrocrinus
  • †Protatrypa
  • †Protaxocrinus
  • †Protoleptostrophia
    • †Protoleptostrophia fragilis
  • †Protomegastrophia
  • †Protometgastrophia
  • †Protoniella
    • †Protoniella parva
  • †Protoscolex
  • †Pseudoammodiscus
  • †Pseudoatrypa
    • †Pseudoatrypa bentonensis
    • †Pseudoatrypa blackhawkensis
    • †Pseudoatrypa boyeri – or unidentified comparable form
    • †Pseudoatrypa bremerensis
    • †Pseudoatrypa devoniana
    • †Pseudoatrypa minor
    • †Pseudoatrypa percrassa
    • †Pseudoatrypa rotunda
    • †Pseudoatrypa rugatula
  • †Pseudobelodina – tentative report
  • †Pseudoconocardium
  • †Pseudoglomospira
  • †Pseudopalmula
    • †Pseudopalmula palmuloides
  • †Pseudoplagiothyra
    • †Pseudoplagiothyra praecursor
  • †Pseudozygopleura
  • †Pseudulrichia
    • †Pseudulrichia simplex
  • †Pterinea
  • †Ptychophyllum
  • †Ptychopleurella
    • †Ptychopleurella bouchardi – or unidentified comparable form
  • †Ptychopteria
    • †Ptychopteria chemungensis
  • †Ptyctodopsis – type locality for genus
    • †Ptyctodopsis menzeli – type locality for species
  • Life restoration of the Late Devonian placoderm fish Ptyctodus
    †Ptyctodus
  • †Pugnoides
    • †Pugnoides calvini
    • †Pugnoides ottumwa
  • †Punctaparchites
    • †Punctaparchites rugosus
    • †Punctaparchites splendens
  • †Punctospirifer
    • †Punctospirifer solidirostris
  • †Pycnostylus
  • †Pyramiblastus
    • †Pyramiblastus fusiformis – type locality for species
  • †Pyrgocystis

Q
  • †Quasibollia
    • †Quasibollia ridicula
  • †Quienquecaudex
    • †Quienquecaudex springeri

R
Life restoration of the Middle Devonian placoderm fish Rhamphodopsis
  • †Raphistomina
  • †Raymondatia
    • †Raymondatia goniglypta
    • †Raymondatia gonigplyta
  • †Raymondiata
    • †Raymondiata goniglypta
  • †Resserella
  • †Retichonetes
    • †Retichonetes brandonensis
  • †Reticularia
    • †Reticularia cooperensis
  • †Retispira
    • †Retispira bilabiatus
    • †Retispira deflectus
    • †Retispira exilis
    • †Retispira perelegans
    • †Retispira type locality for species Kues & Batten 2001 – informal
  • †Rhaphanocrinus
  • †Rhaphistomina
  • †Rhineoderma
    • †Rhineoderma dinglensis
  • †Rhipidium
  • †Rhipidomella
    • †Rhipidomella cuneata
    • †Rhipidomella dalyana – or unidentified comparable form
    • †Rhipidomella tenuicostata
    • †Rhipidomella thiemei
  • †Rhodocrinites
  • †Rhombopora
  • †Rhynchodus
  • †Rhynchopora
    • †Rhynchopora pustulosa
    • †Rhynchopora rowleyi
  • †Rhynchotrema
  • †Rhynchotreta
  • †Rhyssochonetes
    • †Rhyssochonetes bellarugosis
  • †Rigidella
  • †Ripidiorhynchus
    • †Ripidiorhynchus cedarensis
  • †Rugosochonetes
    • †Rugosochonetes multicastatus

S
  • †Saccelatia
    • †Saccelatia angularis
    • †Saccelatia arcuamuralis
    • †Saccelatia arrecta
    • †Saccelatia bullata
    • †Saccelatia cletifera
  • †Sanguinolites
  • †Scaphelasma
  • †Schellwienella
    • †Schellwienella crenulicostata
    • †Schellwienella inaequalis
    • †Schellwienella inflata
    • †Schellwienella planumbona
  • †Schizoblastus
    • †Schizoblastus roemeri
  • †Schizodus
    • †Schizodus sedaliensis
    • †Schizodus trigonalis
  • †Schizophoria
    • †Schizophoria amanaensis
    • †Schizophoria athabaskensis – or unidentified related form
    • †Schizophoria athabaskiensis – or unidentified related form
    • †Schizophoria chouteauensis
    • †Schizophoria dorsata
    • †Schizophoria floydensis
    • †Schizophoria floydia
    • †Schizophoria impressa
    • †Schizophoria iowensis
    • †Schizophoria landoni
    • †Schizophoria lata
    • †Schizophoria laudoni
    • †Schizophoria macfarlanei
    • †Schizophoria macfarlanii
    • †Schizophoria minor
    • †Schizophoria multistriata
    • †Schizophoria subelliptica
  • †Schmidtella
    • †Schmidtella affinis
    • †Schmidtella brevis
    • †Schmidtella lacunosa
    • †Schmidtella latimarginata
  • †Schuchertella
    • †Schuchertella acutistriata
    • †Schuchertella altirostris
    • †Schuchertella humboldtensis
    • †Schuchertella iowensis
    • †Schuchertella nodocostata
    • †Schuchertella parva
    • †Schuchertella pectiniformis
  • †Scofielda
    • †Scofielda bilateralis
  • †Scofieldia
    • †Scofieldia bilateralis
  • †Scutellum
    • †Scutellum depressum
    • †Scutellum thomasi
  • Fossilized calyx of the Carboniferous crinoid ("sea lily") Scytalocrinus
    †Scytalocrinus
  • †Selenella
    • †Selenella pediculus
  • †Semitextularia
    • †Semitextularia thomasi
  • †Septemchiton
    • †Septemchiton iowaensis
    • †Septemchiton iowensis
  • †Septopora
  • †Serpulospira
    • †Serpulospira paradoxus – type locality for species
  • †Setigerites
  • †Shumardella
  • †Sieberella – tentative report
    • †Sieberella insolita
  • †Sievertsia
  • †Sigournea – type locality for genus
    • †Sigournea multidentata – type locality for species
  • †Similodonta
    • †Similodonta obliqua
  • †Simulodonta
    • †Simulodonta obliqua
  • †Sinuites
    • †Sinuites subcompressa
  • †Siphonocrinus
    • †Siphonocrinus nobilis
  • †Skenidioides – tentative report
  • †Skenidium
    • †Skenidium independense
  • †Smithiphyllum
    • †Smithiphyllum belanskii
  • †Sowerbyella
  • †Spathella
  • †Sphaerirhynchia
  • Fossilized holdfast of the Cambrian-Carboniferous conulariid Sphenothallus
    †Sphenothallus
  • †Spinatrypa
    • †Spinatrypa aspera
    • †Spinatrypa augusticostata – or unidentified comparable form
    • †Spinatrypa bellula
    • †Spinatrypa borealis
    • †Spinatrypa hystrix
    • †Spinatrypa mascula
    • †Spinatrypa occidentalis
    • †Spinatrypa planosulcata
    • †Spinatrypa rockfordensis
    • †Spinatrypa trulla
  • †Spinatrypina
    • †Spinatrypina angusticostata – or unidentified comparable form
    • †Spinatrypina edmundsi
  • †Spinocarinifera
    • †Spinocarinifera arcuata
    • †Spinocarinifera arcuatus
  • †Spinocyrtia
    • †Spinocyrtia alta
    • †Spinocyrtia ballardi
    • †Spinocyrtia capax
    • †Spinocyrtia cedarensis
    • †Spinocyrtia corvirostra
    • †Spinocyrtia curvirostra
    • †Spinocyrtia cyrtiformis
    • †Spinocyrtia cyrtinaformis
    • †Spinocyrtia iowensis
    • †Spinocyrtia macbridei
    • †Spinocyrtia pulchra
    • †Spinocyrtia westerensis
  • †Spinulicosta
    • †Spinulicosta spinulicosta
  • Fossilized shell of the Late Ordovician-Late Triassic brachiopod Spirifer
    †Spirifer
    • †Spirifer biplicoides
    • †Spirifer forbesi
    • †Spirifer gregeri
    • †Spirifer legrandensis
    • †Spirifer louisianensis
    • †Spirifer marshallensis
    • †Spirifer missouriensis
    • †Spirifer orestes
    • †Spirifer platynotus
    • †Spirifer stratiformis
  • †Spiriferina
    • †Spiriferina solidirostris
    • †Spiriferina solidirostrus
    • †Spiriferina subtexta
  • †Spirinella
  • Spirorbis
  • †Spyroceras
  • †Stachyodes
    • †Stachyodes costulata
  • †Stainbrookia
    • †Stainbrookia infera
  • †Staufferella
    • †Staufferella falcata
  • †Stegocoelia
    • †Stegocoelia quadricincta – type locality for species
  • †Stenopareia
    • †Stenopareia slocomi – or unidentified comparable form
  • †Stenopareiea
  • †Stephanocrinus
  • †Stereostylus
    • †Stereostylus aages – type locality for species
  • Life restorations of a male (foreground) and female (background) of the Late Devonian-Carboniferous Chimaera relative Stethacanthus
    †Stethacanthus
    • †Stethacanthus depressus
    • †Stethacanthus erectus
  • †Stictopora
  • †Stictostroma
    • †Stictostroma ordinarium
  • †Straparollus
    • †Straparollus ammon
    • †Straparollus argutus – type locality for species
    • †Straparollus cyclostomus
    • †Straparollus macromphalus
  • †Streptelasma
    • †Streptelasma trilobatum – or unidentified comparable form
  • †Streptis
  • †Streptognathodus
    • †Streptognathodus delicatulus – type locality for species
    • †Streptognathodus symmetricus – type locality for species
  • †Streptorhynchus
    • †Streptorhynchus tenuicostatum
  • †Striatochonetes
    • †Striatochonetes buchananensis
    • †Striatochonetes schucherti
  • †Striatopora
    • †Striatopora iowensis
  • †Stricklandia
    • †Stricklandia laevis
    • †Stricklandia lens
  • †Striispirifer
  • †Strimplecrinus
  • †Strobilocystites
  • †Stromatopora
  • †Strophalosia
  • †Strophodonta
    • †Strophodonta umbonata
  • †Stropholosia
    • †Stropholosia littletonensis
  • Fossilized shell of the Ordovician-Silurian brachiopod Strophomena
    †Strophomena
    • †Strophomena abnormalis
    • †Strophomena biplacata
    • †Strophomena cedarensis
    • †Strophomena cicatricosa
    • †Strophomena costata
    • †Strophomena dorsata
    • †Strophomena erratica
    • †Strophomena halli
    • †Strophomena iowensis
    • †Strophomena linderi
    • †Strophomena littleonensis
    • †Strophomena littletonensis
    • †Strophomena masonensis
    • †Strophomena mineolaensis
    • †Strophomena nortoni
    • †Strophomena parva
    • †Strophomena perarcuata
    • †Strophomena planodorsata
    • †Strophomena plicata
    • †Strophomena quadratella
    • †Strophomena randalia
    • †Strophomena reticulata
    • †Strophomena scottensis
    • †Strophomena solonensis
    • †Strophomena subdemissa
    • †Strophomena thomasi
    • †Strophomena trilobata – type locality for species
    • †Strophomena unbonata
    • †Strophomena vera
  • †Strophonella
  • †Strophonelloides
    • †Strophonelloides reversa
  • †Strophostylus
    • †Strophostylus bivolve
  • †Stylonema – tentative report
  • †Sublobalocrinus
    • †Sublobalocrinus kasseri
  • †Sulcatostrophia
    • †Sulcatostrophia camerata
    • †Sulcatostrophia euglyphea
  • †Sygcaulocrinus
    • †Sygcaulocrinus typus
  • Fossil of the Devonian tabulate coral Syringopora
    †Syringopora
  • †Syringostroma – tentative report
    • †Syringostroma confertum
  • †Syringothyris
    • †Syringothyris halli
    • †Syringothyris hannibalensis
    • †Syringothyris newarkensis

T
  • †Tabulophyllum
    • †Tabulophyllum buccinum – type locality for species
    • †Tabulophyllum curtum – type locality for species
    • †Tabulophyllum ehlersi
    • †Tabulophyllum ellipticum
    • †Tabulophyllum expansum
    • †Tabulophyllum levorsoni – type locality for species
    • †Tabulophyllum longum
    • †Tabulophyllum magnum
    • †Tabulophyllum mutabile – type locality for species
    • †Tabulophyllum ponderosum
    • †Tabulophyllum rectum
    • †Tabulophyllum robustum
    • †Tabulophyllum rotundum
    • †Tabulophyllum solidum
  • †Tanaocystis
    • †Tanaocystis type locality for species – informal
  • †Tarphyphyllum
    • †Tarphyphyllum cylindricum – type locality for species
  • Fossil of the Silurian-Carboniferous crinoid ("sea lily") Taxocrinus (right)
    †Taxocrinus
  • †Tecnocyrtina
    • †Tecnocyrtina curvilineata
    • †Tecnocyrtina missouriensis
  • †Tenticospirifer
    • †Tenticospirifer cyrtinaeformis
    • †Tenticospirifer cyrtinaformis
    • †Tenticospirifer shellrockensis
  • †Tetradella
    • †Tetradella carinata
    • †Tetradella ellipsilira
    • †Tetradella septinoda
    • †Tetradella subquadrans
    • †Tetradella ulrichi
  • †Teutonophon
    • †Teutonophon tangentialis
  • †Thaerodonta
    • †Thaerodonta recedens
  • †Thalamocrinus
  • †Theleproktocrinus
    • †Theleproktocrinus davidsoni
  • †Theodissa
    • †Theodissa hungerfordi
  • †Theodossia
    • †Theodossia hungerfordi
  • †Thomasaria
    • †Thomasaria altumbona
  • †Thomasatia
    • †Thomasatia falcicosta
  • †Thomasocrinus
    • †Thomasocrinus cylindrica
  • †Timeischytes
  • †Torynifer
  • †Trachydomia
    • †Trachydomia variata
  • †Tranodis
  • †Trapezophyllum
  • †Tremanotus
  • †Trichinocrinus
  • †Trigeria
  • †Trimerella
  • †Triplesia
  • †Trochonema
  • †Tropidodiscus
  • †Trupetustroma
    • †Trupetustroma bassleri
    • †Trupetustroma hayense
  • †Tubisalebra
  • †Turbonopsis
    • †Turbonopsis hackberryensis
    • †Turbonopsis spiculatus – type locality for species
  • †Tylothyris
    • †Tylothyris bimesialis
    • †Tylothyris inultilis
    • †Tylothyris megista
    • †Tylothyris mesacostalis
    • †Tylothyris rockfordensis
    • †Tylothyris subattenuatta
    • †Tylothyris subvaricosa
    • †Tylothyris sulcocostata

U
  • †Ulocrinus
  • †Ulrichia
    • †Ulrichia saccula
  • †Unispirifer
    • †Unispirifer minnewankensis – or unidentified comparable form
    • †Unispirifer platynotus

V
  • †Variatrypa
    • †Variatrypa arctica
    • †Variatrypa lineata
    • †Variatrypa rugatula
  • †Verkhotomia – tentative report
    • †Verkhotomia calvini

W
  • †Waagenella
    • †Waagenella sowerbyi – tentative report
  • †Warrenella
    • †Warrenella extensa
  • †Warthia
  • †Wellerella
  • †Westerna
    • †Westerna gigantea
  • †Whatcheeria – type locality for genus
    • †Whatcheeria deltae – type locality for species
  • †Whidbornella
    • †Whidbornella lachrymosa
  • †Whitfieldella
  • †Winchellatia
    • †Winchellatia lansingensis
    • †Winchellatia longispina
    • †Winchellatia minnesotensis
  • †Worthenia

Y

Z
  • †Zaphrenthis
    • †Zaphrenthis calceola
    • †Zaphrenthis cliffordana
  • †Zygobolboides
    • †Zygobolboides calvini
    • †Zygobolboides grafensis
    • †Zygobolboides iowensis
    • †Zygobolboides thomasi
  • †Zygospira
    • †Zygospira resupinata
gollark: <:dodecahedron:750379799922475138>
gollark: ++magic sql `SELECT * FROM deleted_items`
gollark: --magic sql `SELECT * FROM deleted_items LIMIT 4`
gollark: --magic sql `SELECT * FROM deleted_items LIMIT 4`
gollark: --magic sql `SELECT * FROM deleted_items LIMIT 4`

References
  • Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 7 August 2017.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.