List of the prehistoric life of Wyoming

This list of the prehistoric life of Wyoming contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Wyoming.

Precambrian

The Paleobiology Database records no known occurrences of Precambrian fossils in Alabama.

Paleozoic

Main article: List of the Paleozoic life of Wyoming

Selected Paleozoic taxa of Wyoming

• † Actinoceras
• † Agassizodus
  • † Agassizodus variabilis
• † Agnostogonus
• † Amphiscapha
• † Amplexus
  • † Anarthraspis chamberlini
• † Archaeocidaris
• 

  Life restoration of the Middle-Late Ordovician jawless fish Astraspis
  † Astraspis
  • † Astraspis desiderata
• † Aviculopecten
  • † Aviculopecten basilicus – or unidentified comparable form
  • † Aviculopecten girtyi
  • † Aviculopecten gryphus
  • † Aviculopecten kaibabensis – or unidentified comparable form
• †Bellerophon
• † Blountiella
• † Bowmania
• † Bucheria – type locality for genus
• 

  Restorative portrait of the Permian synapsid (mammal prescursor) Burnetia
  † Burnetia
• † Campodus
• † Caninia
• † Cardipeltis
  • † Cardipeltis wallacii
• † Catenipora
• † Cavusgnathus
• † Cedaria
• † Cephalaspis
• † Charactoceras – tentative report
• † Chirognathus
• † Chonetes
• † Cleiothyridina
  • † Cleiothyridina atrypoides
  • † Cleiothyridina elegans – or unidentified related form
  • † Cleiothyridina hirsuta
  • † Cleiothyridina sublamellosa – or unidentified related form
• † Coleodus
• 

  Fossilized shell of the Late Devonian-Permian brachiopod Composita
  † Composita
  • † Composita elongata
  • † Composita laevis – or unidentified related form
  • † Composita mira
  • † Composita ovata
  • † Composita sigma
  • † Composita subquadrata
  • † Composita subtilita
  • † Composita sulcata
• † Conocardium
• † Coosella
• † Coosia
• † Coosina
• † Cordylodus
• † Crepicephalus
• † Ctenacanthus
  • † Ctenacanthus amblyxiphias
• † Cyrtogomphoceras
• † Deckera
• † Dentalium
• † Distichophytum
• † Drepanophycus
• † Earlandia
• † Edmondia
• 

  Fossilized shells and restored appearances of the Middle-Late Ordovician nautiloid cephalopod Endoceras
  † Endoceras
• † Euomphalus
• † Favosites
• † Gastrioceras – report made of unidentified related form or using admittedly obsolete nomenclature
• † Genevievella
• † Geragnostus
• † Girvanella
• † Glikmanius
  • † Glikmanius occidentalis
• † Glyptopleura
• † Goniatites – tentative report
• † Gosslingia
• 

  Life restoration of the Permian Chimaera relative Helicoprion
  † Helicoprion
  • † Helicoprion davisii
• † Homagnostus
• † Hyolithes
• † Hypseloconus
• † Idiognathoides
• † Ithyektyphus
• † Janassa
• † Kendallina
• † Kingstonia
• † Kionoceras
• † Kochoceras
• † Lambeoceras
• † Leclercqia
• † Lingula
• † Lingulella
• † Liroceras
• † Lonchocephalus
• † Maryvillia
• † Metacoceras
• 

  Restoration of the Cambrian trilobite Meteoraspis
  † Meteoraspis
• † Micromitra
• † Minicephalus – type locality for genus
• † Naticopsis
  • † Naticopsis judithae
  • † Naticopsis kaibabensis
  • † Naticopsis marthaae – or unidentified comparable form
• † Neospirifer
  • † Neospirifer bakeri
• Nucula – tentative report
• † Olenoides
• † Ozarkodina
• † Paladin
• † Paractinoceras
• † Peripetoceras
• 

  Fossilized shell of the Ordovician brachiopod Plaesiomys
  † Plaesiomys
• † Platyceras
• † Platystrophia
• † Posidonia
• † Prodentalium
• † Protaspis
• † Pseudomelania – tentative report
• † Psilophyton
• † Rawlinsella
• † Renalia
• † Sallya
• 

  Fossil of the Cambrian-Ordovician trilobite Saukiella
  † Saukiella
• † Sawdonia
• Solemya
• † Solenochilus
• † Spiriferina
• † Spyroceras
• † Stearoceras
• † Streptognathodus
• † Strophomena
• † Syspacheilus
• † Tainoceras
• † Tetrataxis
• 

  Fossil of the Cambrian trilobite Tricrepicephalus
  † Tricrepicephalus
• † Uncaspis
• † Uranolophus
• † Westonoceras
• † Wilkingia
• † Winnipegoceras
• † Worthenia
• † Zellerina

Mesozoic

Main article: List of the Mesozoic life of Wyoming

Selected Mesozoic taxa of Wyoming

• 

  Illustration of a living Acipenser sturgeon
  Acipenser
• † Adocus
• † Agathaumas – type locality for genus
  • † Agathaumas sylvestris – type locality for species
• † Agerostrea
• † Albanerpeton
  • † Albanerpeton galaktion
  • † Albanerpeton nexuosus – type locality for species
• † Albertosaurus – or unidentified comparable form
• † Allognathosuchus
• 

  Life restoration of the Late Jurassic theropod dinosaur Allosaurus
  † Allosaurus – type locality for genus
  • † Allosaurus fragilis – type locality for species
• † Alphadon
  • † Alphadon attaragos – type locality for species
  • † Alphadon halleyi
  • † Alphadon marshi
  • † Alphadon sahnii
• † Amblotherium – type locality for genus
• Amia
• † Amphicoelias
  • † Amphicoelias brontodiplodocus – type locality for species
• † Amphidon – type locality for genus
  • † Amphidon superstes – type locality for species
• † Anaklinoceras
• † Anaschisma – type locality for genus
• † Ancorichnus
• † Andromeda
• † Anemia
• † Angistorhinus – type locality for genus
  • † Angistorhinus aeolamnis – type locality for species
  • † Angistorhinus gracilis – type locality for species
  • † Angistorhinus grandis – type locality for species
  • † Angistorhinus maximus – type locality for species
• † Anisoceras
• 

  Life restoration of the Late Cretaceous armored dinosaur Ankylosaurus
  † Ankylosaurus
  • † Ankylosaurus magniventris
• Anomia
• Anona
• Antrimpos
• † Apatosaurinae
• † Apatosaurus
  • † Apatosaurus louisae
  • † Apatosaurus minimus
• † Aploconodon – type locality for genus
  • † Aploconodon comoensis – type locality for species
• Aporrhais
• † Aquilina – type locality for genus
• Aralia
• 

  Foliage and cones of a living Araucaria tree
  Araucaria
• Arca – report made of unidentified related form or using admittedly obsolete nomenclature
• † Archaeotrigon – type locality for genus
• † Arcticoceras
• † Arenicolites
• Aspideretes
• † Asplenium
• † Astarta
• Astarte
• † Atira – tentative report
• † Atokatheridium – or unidentified comparable form
• † Aublysodon
  • † Aublysodon mirandus
• 

  Fossilized shell of the Late Cretaceous ammonoid cephalopod Baculites
  † Baculites
  • † Baculites asper
  • † Baculites asperiformis
  • † Baculites baculus
  • † Baculites clinolobatus
  • † Baculites cobbani
  • † Baculites codyensis
  • † Baculites crickmayi
  • † Baculites elaisi
  • † Baculites eliasi
  • † Baculites gilberti
  • † Baculites grandis
  • † Baculites gregoryensis
  • † Baculites haresi
  • † Baculites jenseni – or unidentified comparable form
  • † Baculites mariasensis
  • † Baculites mclearni
  • † Baculites obtusus
  • † Baculites perplexus
  • † Baculites reesidei
  • † Baculites rugosus
  • † Baculites scotti
• † Baena
• † Baptanodon
• Barbatia – tentative report
• 

  Restoration of the Late Jurassic sauropod dinosaur Barosaurus rearing to defend itself against a pair of the theropod Allosaurus
  † Barosaurus
  • † Barosaurus lentus
• † Basilemys
• † Belonostomus
  • † Belonostomus longirostris
• Bombur
• † Borealosuchus
  • † Borealosuchus sternbergii – type locality for species
• Botula
  • † Botula ripleyana
• Brachaelurus
• † Brachiosaurus
• † Brachybrachium – type locality for genus
  • † Brachybrachium brevipes – type locality for species
• † Brachychampsa
  • † Brachychampsa montana
• † Brachyphyllum
• † Brontopodus – or unidentified comparable form
• 

  Life restoration of a herd of the Late Jurassic sauropod dinosaur Brontosaurus
  † Brontosaurus – type locality for genus
  • † Brontosaurus excelsus – type locality for species
  • † Brontosaurus parvus – type locality for species
  • † Brontosaurus yahnahpin – type locality for species
• † Bryceomys
• † Cadoceras
• Callista
• † Calycoceras
• † Camarasaurus – type locality for genus
  • † Camarasaurus grandis – type locality for species
  • † Camarasaurus lentus – type locality for species
• Campeloma
• † Camptosaurus
  • † Camptosaurus dispar – type locality for species
• † Canna
• † Cedrobaena
• † Celastrus – tentative report
• † Ceramornis – type locality for genus
  • † Ceramornis major – type locality for species
• † Ceratodus
• 

  Restoration of the Late Jurassic ceratosaur Ceratosaurus
  † Ceratosaurus
• Cercidiphyllum
• Cerithium – tentative report
• † Chamops – type locality for genus
• † Champsosaurus
• † Chelonipus – or unidentified comparable form
• Chiloscyllium
• † Chirotherium
  • † Chirotherium barthii
• Chlamys
• † Chondroceras
• † Cimexomys
  • † Cimexomys minor
• † Cimolestes
  • † Cimolestes incisus – type locality for species
  • † Cimolestes stirtoni – type locality for species
• † Cimolodon
  • † Cimolodon nitidus – type locality for species
• 

  Life restoration of the face of the Late Cretaceous multituberculate mammal Cimolomys
  † Cimolomys
  • † Cimolomys clarki
  • † Cimolomys gracilis – type locality for species
  • † Cimolomys parvus – type locality for species
• † Cimolopteryx
  • † Cimolopteryx maxima – type locality for species
  • † Cimolopteryx rara
• Cinnamomum
• Cissus
• Cladophlebis
  • † Cladophlebis parva
  • † Cladophlebis readi – type locality for species
  • † Cladophlebis wyomingensis – type locality for species
• † Claraia
  • † Claraia clarai
  • † Claraia mulleri
  • † Claraia stachei
• † Clemensodon – type locality for genus
  • † Clemensodon megaloba – type locality for species
• † Coelosuchus – type locality for genus
• 

  Life restoration of the Late Jurassic primmitive tyrannosaur Coelurus
  † Coelurus – type locality for genus
  • † Coelurus fragilis – type locality for species
• † Collignoniceras
  • † Collignoniceras woollgari
• † Comobatrachus – type locality for genus
• † Comodactylus – type locality for genus
  • † Comodactylus ostromi – type locality for species
• † Comodon – type locality for genus
  • † Comodon gidleyi – type locality for species
• † Comonecturoides – type locality for genus
• † Comotherium – type locality for genus
• † Compsemys
• 

  Illustration of fossilized vertebrae of the Late Cretaceous-Eocene snake Coniophis. Othniel Charles Marsh (1892).
  † Coniophis – type locality for genus
• † Corax
• Corbula
• † Coriops
• † Corosaurus
  • † Corosaurus alcovensis
• Crenella
• † Cretorectolobus
  • † Cretorectolobus olsoni
• † Ctenacodon – type locality for genus
  • † Ctenacodon laticeps – type locality for species
  • † Ctenacodon scindens – type locality for species
  • † Ctenacodon serratus – type locality for species
• † Cteniogenys – type locality for genus
• Cucullaea
• † Cunningtoniceras
• Cuspidaria
• † Dakotasaurus – type locality for genus
• † Daspletosaurus
• 

  Life restoration of the Early Cretaceous dromaeosaur ("raptor") Deinonychus
  † Deinonychus
  • † Deinonychus antirrhopus
• † Deltatheroides – or unidentified comparable form
• † Dennstaedtia
• Dentalium
  • † Dentalium pauperculum
• † Derrisemys
• † Desmatosuchus
• † Dicotyledon
• 

  Restoration of the Late Cretaceous marsupial relative Didelphodon
  † Didelphodon
• † Didymoceras
  • † Didymoceras nebrascense
  • † Didymoceras stevensoni
• † Dinochelys
• † Diospyros
• † Diplocraterion
• † Diplodocinae
• 

  Life restoration of the Late Jurassic long-necked dinosaur Diplodocus
  † Diplodocus
  • † Diplodocus carnegii – type locality for species
  • † Diplodocus hallorum
  • † Diplodocus longus
• † Discoscaphites
• † Docodon – type locality for genus
  • † Docodon affinis – type locality for species
  • † Docodon crassus – type locality for species
  • † Docodon striatus – type locality for species
  • † Docodon superus – type locality for species
  • † Docodon victor – type locality for species
• † Dolichobrachium – type locality for genus
• 

  Mounted fossilized skeleton of the Late Cretaceous plesiosaur Dolichorhynchops
  † Dolichorhynchops
  • † Dolichorhynchops bonneri – type locality for species
  • † Dolichorhynchops osborni
• † Doratodon – tentative report
• † Dorsetisaurus
• † Drinker – type locality for genus
  • † Drinker nisti – type locality for species
• † Dromaeosaurus
• † Dryolestes – type locality for genus
• Dryopteris
• † Dryosaurus
  • † Dryosaurus altus – type locality for species
• † Dryptosaurus – or unidentified comparable form
• † Dyslocosaurus – type locality for genus
  • † Dyslocosaurus polyonychius – type locality for species
• † Echidnocephalus – tentative report
• † Edmontonia
  • † Edmontonia rugosidens – or unidentified comparable form
• † Edmontosaurus
  • 

    Life restoration of the Late Cretaceous duck-billed dinosaur Edmontosaurus annectens
    † Edmontosaurus annectens – type locality for species
• † Elaphrosaurus – tentative report
• † Elasmosaurus
• † Emarginachelys
• †Empo
• † Enneabatrachus – type locality for genus
  • † Enneabatrachus hechti – type locality for species
• † Eobatrachus – type locality for genus
• † Eocephalites
• † Eopelobates
• † Equisetum
• † Essonodon
  • † Essonodon browni
• 

  Fossilized shell of the Late Cretaceous ammonoid cephalopod Eubostrychoceras
  † Eubostrychoceras
• † Eubrachiosaurus – type locality for genus
  • † Eubrachiosaurus browni – type locality for species
• † Eucalycoceras
• † Eucrossorhinus
• † Euomphaloceras
• † Euspira
• † Euthlastus – type locality for genus
• † Eutrephoceras
• † Eutretauranosuchus
  • † Eutretauranosuchus delfsi
• † Exiteloceras
• † Exogyra
  • † Exogyra costata
• Fasciolaria
• Ficus
• † Forresteria
• † Fosterovenator – type locality for genus
• † Foxraptor – type locality for genus
• † Fraxinus
• † Galeamopus
  • † Galeamopus hayi
  • † Galeamopus pabsti – type locality for species
• 

  Mounted fossilized skeleton of the Late Jurassic armored dinosaur Gargoyleosaurus
  † Gargoyleosaurus
  • † Gargoyleosaurus parkpinorum
• Gerrhonotus – or unidentified comparable form
• † Gervillaria
• † Gervillia
• † Gilmoremys
  • † Gilmoremys lancensis – type locality for species
• Ginglymostoma
• Ginkgo
  • † Ginkgo adiantoides – tentative report
• † Glyptops – type locality for genus
• Glyptostrobus
• 

  Fossilized skeleton of the Middle Jurassic-Late Cretaceous mammal Gobiconodon
  † Gobiconodon
• † Goniopholis
• † Gryphaea
• † Habrosaurus – type locality for genus
  • † Habrosaurus dilatus – type locality for species
• † Hamites
• † Haplocanthosaurus
• † Harpactognathus – type locality for genus
  • † Harpactognathus gentryii – type locality for species
• † Heptasuchus – type locality for genus
  • † Heptasuchus clarki – type locality for species
• 

  Life restoration of the Late Jurassic stegosaur Hesperosaurus
  † Hesperosaurus – type locality for genus
  • † Hesperosaurus mjosi – type locality for species
• † Heteroceras
• † Hoploscaphites
  • † Hoploscaphites birkelundae – type locality for species
  • † Hoploscaphites gilli
  • † Hoploscaphites nodosus
  • † Hoploscaphites plenus
  • † Hoploscaphites quadrangularis
• † Hybodus
  • † Hybodus montanensis
  • † Hybodus wyomingensis – type locality for species
• † Hyperodapedon
  • † Hyperodapedon sanjuanensis – or unidentified comparable form
• † Ichthyodectes
• 

  Fossilized shell of the Early Jurassic-Late Cretaceous marine bivalve Inoceramus with a human indicating its size
  † Inoceramus
  • † Inoceramus agdjakendensis – or unidentified comparable form
  • † Inoceramus americanus – type locality for species
  • † Inoceramus anglicus
  • † Inoceramus balchii
  • † Inoceramus barabini
  • † Inoceramus crispii
  • † Inoceramus deformis
  • † Inoceramus dimidius
  • † Inoceramus erectus – or unidentified related form
  • † Inoceramus fibrosus
  • † Inoceramus fragilis – or unidentified related form
  • † Inoceramus gibbosus
  • † Inoceramus glacierensis
  • † Inoceramus grandis
  • † Inoceramus incurvus
  • † Inoceramus lundbreckensis
  • † Inoceramus perplexus
  • † Inoceramus prefragilis
  • † Inoceramus proximus – or unidentified related form
  • † Inoceramus sagensis
  • † Inoceramus subcircularis
  • † Inoceramus subcompressus
  • † Inoceramus sublaevis
  • † Inoceramus tenuirostratus
  • † Inoceramus tenuiumbonatus – or unidentified comparable form
  • † Inoceramus turgidus – or unidentified related form
  • † Inoceramus typicus
  • † Inoceramus umbonatus
  • † Inoceramus undabundus
• † Ischyrhiza
  • † Ischyrhiza avonicola – type locality for species
  • † Ischyrhiza basinensis – type locality for species
  • † Ischyrhiza mira
• Isognomon
• Isurus – tentative report
• † Janumys
• † Jeletzkytes
  • † Jeletzkytes dorfi – type locality for species
• † Kaatedocus – type locality for genus
  • † Kaatedocus siberi – type locality for species
• 

  Fossilized skeleton of the Late Triassic amphibian Koskinonodon
  † Koskinonodon – type locality for genus
• † Laolestes – type locality for genus
  • † Laolestes eminens – type locality for species
  • † Laolestes goodrichi – type locality for species
  • † Laolestes oweni – type locality for species
• † Laopteryx – type locality for genus
• † Laosaurus – type locality for genus
  • † Laosaurus celer – type locality for species
• Laurus
• † Lepidotes – or unidentified related form
• Lepisosteus
• † Leptalestes
  • † Leptalestes cooki – type locality for species
  • † Leptalestes krejcii
• 

  Life restoration of the Late Cretaceous primitive horned dinosaur Leptoceratops
  † Leptoceratops
  • † Leptoceratops gracilis
• Lima
• Lingula
• Liquidambar
• † Lisserpeton
  • † Lisserpeton bairdi
• † Lissodus
• † Lonchidion – type locality for genus
• † Lonchodytes – type locality for genus
  • † Lonchodytes estesi – type locality for species
• Lucina
• Lunatia – tentative report
• Lygodium
• † Macelognathus – type locality for genus
• Mactra
• † Mecochirus
• 

  Life restoration of the Late Jurassic plesiosaur Megalneusaurus
  † Megalneusaurus
  • † Megalneusaurus rex – type locality for species
• † Megasphaeroceras
• † Melvius
• † Meniscoessus
  • † Meniscoessus intermedius
  • † Meniscoessus robustus – type locality for species
  • † Meniscoessus seminoensis – type locality for species
• † Menuites
• † Mesodma
  • † Mesodma formosa
  • † Mesodma hensleighi
  • † Mesodma primaeva
  • † Mesodma thompsoni – type locality for species
• † Metoicoceras
  • † Metoicoceras geslinianum
  • † Metoicoceras mosbyense – or unidentified comparable form
• 

  Life restoration of the Early Cretaceous oviraptorosaur Microvenator
  † Microvenator
  • † Microvenator celer
• Modiolus
• † Morosaurus
• † Myledaphus
  • † Myledaphus bipartitus
• † Myophorella
  • † Myophorella yellowstonensis
• Myrica
• † Mytilus
• † Nanocuris
• † Nanosaurus
  • † Nanosaurus rex
• † Nanotyrannus – tentative report
• † Naomichelys
• † Nelumbo
• † Neocardioceras
  • † Neocardioceras laevigatum – type locality for species
  • † Neocardioceras minutum – type locality for species
  • † Neocardioceras transiens
  • † Neocardioceras uptonense – type locality for species
• † Neoplagiaulax
• † Nerinea – tentative report
• 

  Historical reconstruction of the holotype skeleton from 1921
  † Nodosaurus – type locality for genus
  • † Nodosaurus textilis – type locality for species
• † Normannites – tentative report
• Nucula
• † Obamadon
  • † Obamadon gracilis
• † Odaxosaurus – type locality for genus
  • † Odaxosaurus piger – type locality for species
• Odontaspis
• † Oklatheridium
• † Onoclea
• † Ophiopsis
• 

  Life restoration of the Late Jurassic ichthyosaur Ophthalmosaurus
  † Ophthalmosaurus
  • † Ophthalmosaurus natans
• † Opisthias
• † Opisthotriton
• † Ornitholestes – type locality for genus
  • † Ornitholestes hermanni – type locality for species
• † Ornithomimus
  • † Ornithomimus minutus
  • † Ornithomimus sedens – type locality for species
  • † Ornithomimus velox – or unidentified comparable form
• † Osmakasaurus – tentative report
  • † Osmakasaurus depressus
• Ostrea
• † Othnielia
• † Othnielosaurus
  • † Othnielosaurus consors – type locality for species
• † Oxytoma
• 

  Pachycephalosaurus
  † Pachycephalosaurus
  • † Pachycephalosaurus wyomingensis – type locality for species
• † Pachyrhizodus
• † Pachyteuthis
• † Palaeobatrachus
• † Palaeosaniwa – type locality for genus
  • † Palaeosaniwa canadensis – type locality for species
• † Paleopsephurus
  • † Paleopsephurus wilsoni
• † Paleorhinus
  • † Paleorhinus parvus – type locality for species
• † Paliurus
• † Pantosaurus – type locality for genus
  • † Pantosaurus striatus – type locality for species
• † Paracimexomys
  • † Paracimexomys priscus
• † Paradiscoglossus – type locality for genus
• † Paralbula
• † Paramacellodus
• 

  Life restoration of the Late Triassic phytosaur Parasuchus
  † Parasuchus
• † Paressonodon
• † Pariguana – type locality for genus
• † Parikimys
• † Paronychodon
  • † Paronychodon lacustris – type locality for species
• † Paurodon – type locality for genus
• † Pecopteris
• Pecten
• † Pectinodon – type locality for genus
  • † Pectinodon bakkeri – type locality for species
• Persea – report made of unidentified related form or using admittedly obsolete nomenclature
• 

  Phoenicites
  † Phoenicites – or unidentified comparable form
• Pholadomya
  • † Pholadomya inaequiplicata
  • † Pholadomya kingi
• † Phragmites
• Phyllodus
• Physa – or unidentified comparable form
• † Piceoerpeton
• Pinna
• Pinus
• Pistacia
• † Pistia
• † Placenticeras
  • † Placenticeras intercalare
  • † Placenticeras meeki
  • † Placenticeras pseudoplacenta
• † Plagiostoma
• Planorbis
• Platanus
• 

  Life restoration of the Late Cretaceous mosasaur Platecarpus
  † Platecarpus
  • † Platecarpus tympaniticus
• † Platymya
• † Platypterygius
• † Plesiobaena
• † Plesiopleurodon – type locality for genus
  • † Plesiopleurodon wellesi – type locality for species
• † Plesiosaurus
• Plicatula
• Polinices
• † Polycotylus
• 

  Restoration of the Late Triassic crocodile relative Poposaurus with an anachronistic human to scale
  † Poposaurus – type locality for genus
  • † Poposaurus gracilis – type locality for species
• Populus
• † Potamoceratodus
• † Potamornis – type locality for genus
  • † Potamornis skutchi – type locality for species
• † Priacodon
  • † Priacodon ferox – type locality for species
  • † Priacodon grandaevus – type locality for species
  • † Priacodon lulli – type locality for species
  • † Priacodon robustus – type locality for species
• † Prodesmodon – type locality for genus
• † Prodiplocynodon – type locality for genus
  • † Prodiplocynodon langi – type locality for species
• † Protocardia
• 

  Fossilized mandible of the Late Cretaceous-Paleocene mammal Protungulatum
  † Protungulatum – tentative report
• Prunus
• † Psalodon
  • † Psalodon fortis – type locality for species
  • † Psalodon marshi – type locality for species
  • † Psalodon potens – type locality for species
• † Pseudoperna
  • † Pseudoperna congesta
• † Pteraichnus
  • † Pteraichnus stokesi – type locality for species
• 

  Life restoration of the Late Cretaceous pterosaur Pteranodon
  † Pteranodon
  • † Pteranodon longiceps
• † Pteria
• † Pterodactylus
  • † Pterodactylus montanus – type locality for species
• † Ptilotodon
• † Ptychotrygon
  • † Ptychotrygon boothi – type locality for species
• Quercus
• † Rhamnus
• Rhinobatos
• † Rhizocorallium
• † Richardoestesia
  • † Richardoestesia isosceles
• Rostellaria – tentative report
• † Saccoloma – report made of unidentified related form or using admittedly obsolete nomenclature
• Salix
• † Salpichlaena
• Sassafras
• † Saurexallopus – type locality for genus
• † Saurocephalus
• † Saurolophus
• † Sauropelta
  • † Sauropelta edwardsorum
• 

  Diagram illustrating the Early Cretaceous long-necked dinosaur Sauroposeidon with anachronistic humans to scale
  † Sauroposeidon
  • † Sauroposeidon proteles
• † Saurornithoides – or unidentified comparable form
• † Saurornitholestes
• † Sauvagesia
• † Scapanorhynchus
  • † Scapanorhynchus texanus
• † Scapherpeton
• † Scaphites
  • † Scaphites aquilaensis
  • † Scaphites binneyi
  • † Scaphites hippocrepis
  • † Scaphites stantoni
  • † Scaphites ventricosus
  • † Scaphites whitfieldi
• † Scotiophryne
• Scyliorhinus
• 

  A living Selaginella, or spikemoss
  † Selaginella
• Sequoia
• † Skolithos
• † Smilax
• † Socognathus
• Solemya
• † Sparganium
• Sphaerium – or unidentified comparable form
• † Sphenodiscus
  • † Sphenodiscus lobatus – or unidentified comparable form
  • † Sphenodiscus pleurisepta
• † Sphenopteris
• 

  Restoration of the Late Cretaceous shark Squalicorax
  Squalicorax
  • † Squalicorax kaupi
  • † Squalicorax pristodontus
• † Squatirhina
  • † Squatirhina americana – type locality for species
• † Staphylea
• † Stegopelta – type locality for genus
  • † Stegopelta landerensis – type locality for species
• 

  Restoration of the Late Jurassic stegosaur Stegosaurus
  † Stegosaurus – type locality for genus
  • † Stegosaurus armatus – type locality for species
  • † Stegosaurus longispinus – type locality for species
  • † Stegosaurus stenops
  • † Stegosaurus sulcatus – type locality for species
  • † Stegosaurus ungulatus – type locality for species
• Sterculia
• † Stokesosaurus – tentative report
  • † Stokesosaurus clevelandi
• † Struthiomimus – or unidentified comparable form
• † Styxosaurus
  • † Styxosaurus browni – type locality for species
• 

  Restoration in multiple views of the Late Jurassic sauropod dinosaur Supersaurus with an anachronistic human to scale
  † Supersaurus
  • † Supersaurus vivianae
• † Tanycolagreus – type locality for genus
  • † Tanycolagreus topwilsoni – type locality for species
• † Tatenectes
  • † Tatenectes laramiensis – type locality for species
• † Tathiodon – type locality for genus
• † Tenea
• † Tenontosaurus
  • † Tenontosaurus tilletti
• Teredo
• † Thalassinoides
• † Theatonius – type locality for genus
• † Theretairus – type locality for genus
• 

  Life restoration of the Late Cretaceous herbivorous dinosaur Thescelosaurus
  † Thescelosaurus – type locality for genus
  • † Thescelosaurus neglectus – type locality for species
• † Thoracosaurus – or unidentified comparable form
• Thracia
• Thyasira
• † Thyrsopteris
• † Tinodon – type locality for genus
• † Torosaurus – type locality for genus
  • † Torosaurus latus – type locality for species
• † Torotix – type locality for genus
  • † Torotix clemensi – type locality for species
• † Torvosaurus – type locality for genus
  • † Torvosaurus tanneri – type locality for species
• † Trachodon
• † Tragodesmoceras
  • † Tragodesmoceras carlilense
• † Trapa
• 

  Mounted fossilized skeleton of the Late Cretaceous horned dinosaur Triceratops
  † Triceratops – type locality for genus
  • † Triceratops horridus – type locality for species
  • † Triceratops ingens – type locality for species
  • † Triceratops prorsus – type locality for species
  • † Triceratops sulcatus – type locality for species
• † Trigonia
  • † Trigonia americana
  • † Trigonia elegantissima
  • † Trigonia montanaensis
  • † Trigonia quadrangularis
• † Trioracodon
  • † Trioracodon bisulcus – type locality for species
• † Troodon
  • † Troodon formosus
• Typha
• 

  Fossilized skeleton of the Late Cretaceous tyrannosaur Tyrannosaurus
  † Tyrannosaurus – type locality for genus
  • † Tyrannosaurus rex – type locality for species
• † Uluops – type locality for genus
  • † Uluops uluops – type locality for species
• Unio
• Vanikoro
• † Viburnum
• Vitis
• Viviparus – or unidentified comparable form
• † Weichselia
• † Williamsonia – tentative report
• † Woodwardia
• † Xenocephalites
• † Xiphactinus
• Yoldia
• 

  Fossil of the Early Triassic-Eocene cycad-like frond Zamites
  † Zamites
  • † Zamites arcticus
  • † Zamites borealis
  • † Zamites brevipennis
• † Zapsalis – or unidentified comparable form
• † Zephyrosaurus – or unidentified comparable form
• † Zofiabaatar – type locality for genus
  • † Zofiabaatar pulcher – type locality for species

Cenozoic

Main article: List of the Cenozoic life of Wyoming

Selected Cenozoic taxa of Wyoming

• †Abuta – or unidentified related form
• †Acacia
• Accipiter
  • †Accipiter gentilis
  • 

    Living adult (center) and chick (lower right) Accipiter striatus, or sharp-shinned hawks
    †Accipiter striatus
• Acer
• †Acidomomys – type locality for genus
• †Acrostichum
• †Adilophontes – type locality for genus
• †Adocus
• Aegialia
• Aegolius
  • †Aegolius acadicus
  • †Aegolius funereus
• 

  Life restoration of the Miocene camel Aepycamelus, or the long-necked camel. Heinrich Harder (1920).
  †Aepycamelus
• †Aesculus
• †Afairiguana – type locality for genus
  • †Afairiguana avius – type locality for species
• Agelaius
  • †Agelaius phoeniceus
• †Agnotocastor
  • †Agnotocastor galushai – type locality for species
• †Agriochoerus
• †Ailanthus
• †Alastor
• Alces
  • †Alces alces
• †Alchornea – or unidentified related form
• †Aletodon
• 

  Aletomeryx
  †Aletomeryx
• Aleurites
• †Allognathosuchus
• †Allophylus
• Alnus
• †Amentotaxus
• Amia
• †Amitabha – type locality for genus
  • †Amitabha urbsinterdictensis – type locality for species
• †Ampelopsis
• †Amphechinus
• Amphiuma
• Amyda
• †Anamirta – or unidentified comparable form
• Anas
  • †Anas acuta
  • 

    A living Spatula clypeata, or northern shoveler
    †Anas clypeata
  • †Anas crecca
  • †Anas platyrhynchos
• †Anconodon
• †Anemia
• †Anniealexandria – type locality for genus
• †Anobium
• †Anolbanolis – type locality for genus
  • †Anolbanolis banalis – type locality for species
  • †Anolbanolis geminus – type locality for species
• †Anosteira
• †Antherophagus
• Anthonomus
• Antilocapra
  • †Antilocapra americana
• Apalone
• †Aphelops
• Aquila
  • †Aquila chrysaetos
• Aralia
• Araneus
• †Araucaria
• †Archaeocyon
• †Archaeotherium
• †Archaerhineura – type locality for genus
• †Arctocyon
• 

  Restoration of an Arctodus, or short-faced bear, with a human to scale
  †Arctodus
  • †Arctodus simus
• †Arctostaphylos
• †Arenahippus
• †Aristolochia
• †Armintomys
  • †Armintomys tullbergi
• †Artocarpus – tentative report
• †Asarkina
• Asio
  • †Asio flammeus
  • 

    A living Asio otus, or long-eared owl
    †Asio otus
• †Asplenium
• †Astronium
• †Athyana
• †Avunculus
• Aythya
  • †Aythya collaris
• Azolla
• †Babibasiliscus – type locality for genus
• †Baena
• †Bahndwivici – type locality for genus
  • †Bahndwivici ammoskius – type locality for species
• †Baiotomeus
  • †Baiotomeus douglassi
  • †Baiotomeus lamberti
• 

  Life restoration of the Paleocene-Eocene pantodont mammal Barylambda
  †Barylambda
• †Bathornis
• †Bathygenys
• †Bathyopsis
• †Batodonoides
  • †Batodonoides vanhouteni – type locality for species
• †Batrachosauroides – tentative report
• Bauhinia
• †Beilschmiedia
• †Berosus
• Betula
• Biomphalaria
• Bison
  • †Bison bison
• †Bisonalveus – type locality for genus
  • †Bisonalveus browni – type locality for species
• †Blechnum
• Bledius
• 

  Fossilized skeleton of the eocene-?Miocene boa snake Boavus
  †Boavus – type locality for genus
• Boletina
• †Bootherium
  • †Bootherium bombifrons
• †Borealosuchus
  • †Borealosuchus formidabilis
  • †Borealosuchus wilsoni – type locality for species
• †Boverisuchus
  • †Boverisuchus vorax
• 

  Restorative portrait of the Miocene oreodont mammal Brachycrus
  †Brachycrus
• †Brachyhyops
• †Brachyrhynchocyon
• †Brachyuranochampsa – type locality for genus
  • †Brachyuranochampsa eversolei – type locality for species
• Bracon
• Branta
  • †Branta canadensis
• †Brontops
• †Bryophyte – or unidentified related form
• Bubo
  • †Bubo virginianus
• Buteo
  • 

    A living Buteo jamaicensis, or red-tailed hawk
    †Buteo jamaicensis
  • †Buteo lagopus
  • †Buteo regalis – or unidentified comparable form
• Buteogallus
• †Caedocyon
  • †Caedocyon tedfordi – type locality for species
• †Caenopus
• †Caesalpinia
• †Calamospiza
  • †Calamospiza melanocorys
• Calidris
  • †Calidris melanotos
• †Callomyia
• †Camelops
  • †Camelops hesternus – or unidentified comparable form
• †Canarium
• †Canavalia
• Canis
  • 

    Modern mounted skeleton of Canis lupus, the grey wolf, to scale with a fossilized skeleton of the Pleistocene wolf Canis dirus, or dire wolf
    †Canis dirus
  • †Canis latrans
  • †Canis lupus
• †Cantius
  • †Cantius abditus – type locality for species
  • †Cantius frugivorus
  • †Cantius mckennai
  • †Cantius ralstoni
  • †Cantius torresi
  • †Cantius trigonodus – type locality for species
• Capella
  • †Capella gallinago
• Caracara
  • †Caracara plancus
• †Cardiospermum
• Carduelis
• †Carpolestes
  • 

    Life restoration of the Paleocene primate relative Carpolestes simpsoni
    †Carpolestes simpsoni – type locality for species
• Carya
• Castanea
• Castor
• †Catopsalis
  • †Catopsalis alexanderi
  • †Catopsalis calgariensis
• Cedrela
• †Cedrobaena – type locality for genus
• †Celastrus
• Celtis
• †Centrocercus
  • †Centrocercus urophasianus
• †Cephalogale
• †Ceratophyllum
  • †Ceratophyllum muricatum
• 

  Life restoration of the Paleocene-Eocene crocodilian Ceratosuchus
  †Ceratosuchus
  • †Ceratosuchus burdoshi
• Cercidiphyllum
• †Cercopis
• †Champsosaurus
• Chara
• Charadrius
  • †Charadrius montanus
  • †Charadrius vociferus
• Charina
• Cheilosia
• †Chelomophrynus – type locality for genus
• †Chilostigma – tentative report
• Chironomus
• 

  Fossilized skeleton of the Eocene turtle Chisternon
  †Chisternon
• †Cholula
• †Choragus
• †Chordeiles
  • †Chordeiles minor
• †Chriacus
  • †Chriacus oconostotae
• †Cimolestes
• Cinnamomum
• Circus
  • †Circus cyaneus
• Cissus
• †Cixius – tentative report
• 

  Flowers of a living Cladrastis, or yellowwood
  Cladrastis
• †Cnemidaria
• †Coccothraustes
  • †Coccothraustes vespertinus
• Cocculus
• Colaptes
  • †Colaptes auratus
• †Colodon
• †Compsemys
• †Coniophis
• †Copecion
• †Copelemur
• †Corizus – tentative report
• 

  Fossilized skull of the Oligocene-Miocene bone-crushing dog Cormocyon
  †Cormocyon
• Cornus
• Corvus
  • †Corvus brachyrhynchos
  • †Corvus corax
• †Corylus
• †Coryphodon
• Crataegus
• †Credneria
• Crocodylus
  • 

    Fossilized skull of the Eocene crocodilian "Crocodylus" affinis
    †Crocodylus affinis – type locality for species
• †Cryptocephalus
• Cryptorhynchus
• Cryptotis
• Culex
• Cyclocarya
• †Cynarctoides
  • †Cynarctoides acridens
  • †Cynarctoides harlowi
  • †Cynarctoides luskensis – type locality for species
• †Dalbergia
• †Daphoenictis
• 

  Life restoration of the Miocene bear-dog Daphoenodon
  †Daphoenodon
• †Daphoenus
  • †Daphoenus lambei
• Dasyatis
• †Davidia
• †Dawsonicyon – type locality for genus
• Dendragapus
  • †Dendragapus obscurus
• †Dendropanax
• †Dennstaedtia
• †Desmatippus
• †Desmatochoerus
• †Desmocyon
• †Diacodexis
• †Diatryma – type locality for genus
• †Diceratherium
• Dicranomyia
• Dicrostonyx
• †Didymictis
• †Dilophodon
• †Dinictis
• †Dinohyus
• †Diospyros
• †Diplocynodon
• 

  Fossilized skeleton of the Early Cretaceous-Eocene bony fish Diplomystus preserved in the act of swallowing another fish
  †Diplomystus
  • †Diplomystus dentatus
• †Dipoides
• Dipteronia
• Discus
• †Dissacus
• †Distylium
• Dolichopus
• †Dombeya
• †Domnina
• †Drimys
• Dryopteris
• 

  Fossilized shell of the Eocene turtle Echmatemys
  †Echmatemys
• †Ectocion
• †Ectoconus
• †Ectopistes
  • †Ectopistes migratorius
• †Ectopocynus
• †Elaeodendron
• †Enhydrocyon
  • †Enhydrocyon basilatus
• Enochrus
• †Entelodon
• 

  Life restoration of a pair of the Eocene uintathere mammal Eobasileus. Charles R. Knight (1890s).
  †Eobasileus
  • †Eobasileus cornutus
• †Eoconodon
  • †Eoconodon copanus
• †Eohippus
• †Eorhinophrynus
• †Eostrix
• †Eotitanops
• †Epicaerus
• †Epihippus
• †Equisetum
• Equus
  • 

    Restoration of the Pleistocene-Holocene Equus conversidens, or Mexican horse
    †Equus conversidens
• Eremophila
  • †Eremophila alpestris
• Erythrina
• Esox
• †Eucastor
• †Eucommia
• Eugenia
• †Euparius
• Euphagus
  • †Euphagus cyanocephalus
• †Eusmilus
• Eutamias
• Fagus
• Falco
  • †Falco columbarius
  • †Falco mexicanus
  • †Falco rusticolus
  • †Falco sparverius
• Ficus
• 

  Fossilized skeleton of the Eocene bird Fluvioviridavis
  †Fluvioviridavis – type locality for genus
• †Fortuna
• †Fraxinus
• †Fulgora
• †Gagadon
  • †Gagadon minimonstrum
• †Galecyon
• Galerita
• †Gallinuloides – type locality for genus
• Gastrocopta
• Gerrhonotus – or unidentified comparable form
• Ginkgo
  • †Ginkgo adiantoides
• †Gleditsia – or unidentified related form
• 

  Fossilized foliage of the cypress relative Glyptostrobus
  Glyptostrobus
  • †Glyptostrobus europaeus
• †Goniacodon
• Gopherus
• †Gracilocyon
• Grus
  • †Grus canadensis
• Gulo
  • †Gulo gulo
• †Gymnocladus
• Gyraulus – or unidentified comparable form
• †Habrosaurus
  • †Habrosaurus dilatus
• †Hadrianus
• †Hapalodectes
• †Hapalorestes
• †Haplolambda
• †Harpagolestes
• †Helaletes – type locality for genus
• †Helix
• 

  Fossilized skull of the Oligocene lizard Helodermoides
  †Helodermoides
  • †Helodermoides tuberculatus
• †Hemiauchenia
• Hemitelia
• †Heptodon
• †Herpetotherium
  • †Herpetotherium knighti
• †Hesperocyon
• †Heteraletes
• Hirundo – or unidentified comparable form
  • †Hirundo pyrrhonota
• †Holospira
• †Homogalax
• †Hoplophoneus
• †Hovenia
• †Hutchemys
• 

  Life restoration of the Eocene-Miocene creodont mammal Hyaenodon
  †Hyaenodon
  • †Hyaenodon crucians
  • †Hyaenodon horridus
  • †Hyaenodon megaloides
  • †Hyaenodon montanus
  • †Hyaenodon mustelinus
  • †Hyaenodon venturae
  • †Hyaenodon vetus
• Hydrangea
• Hydrobia – report made of unidentified related form or using admittedly obsolete nomenclature
• Hydrobius
• †Hydrochus
• †Hydromystria
• †Hylobius
• †Hyopsodus
  • †Hyopsodus lepidus – type locality for species
• †Hypertragulus
• †Hypisodus
• 

  Life restoration of the Miocene horse Hypohippus. Heinrich Harder (1920).
  †Hypohippus
• †Hypolagus
• †Hyporhina
• †Hypsiops
• †Hyrachyus
• †Hyracodon
• †Hyracotherium
  • †Hyracotherium vasacciense
• †Icaronycteris – type locality for genus
  • †Icaronycteris index – type locality for species
• †Indusia
• †Intyrictis
• †Ischyromys
• †Iulus
• Juglans
• †Juncitarsus – type locality for genus
• Junco – or unidentified comparable form
  • †Junco hyemalis
• †Kalmia
• †Kalobatippus
• 

  Fossilized skeleton of the Eocene bony fish Knightia
  †Knightia
  • †Knightia eocaena
• Koelreuteria
• †Lagopus
  • †Lagopus leucurus – or unidentified comparable form
• †Lambdotherium
• †Lambertocyon
  • †Lambertocyon eximius
• Lanius
  • †Lanius ludovicianus
• Larus – or unidentified comparable form
• Lathrobium
• †Laurinoxylon
• Laurus
• Leiocephalus
• Lepisosteus
• 

  Restoration of the Oligocene-Miocene oreodont mammal Leptauchenia
  †Leptauchenia
• †Leptictis
• †Leptocyon
• †Leptolambda
• †Leptomeryx
• †Leptoreodon
• †Leptotragulus
• Lepus
• †Leucosticte
  • †Leucosticte arctoa
• †Limnocyon
  • †Limnocyon verus – type locality for species
• †Limnofregata – type locality for genus
  • †Limnofregata azygosternon – type locality for species
• Lindera
• †Lisserpeton
  • †Lisserpeton bairdi
• †Listronotus
• †Lithophysa – type locality for genus
• 

  Life restoration of the Paleocene-Eocene bird Lithornis
  †Lithornis
  • †Lithornis plebius – type locality for species
  • †Lithornis promiscuus – type locality for species
• Lygodium
• Lynx
  • †Lynx lynx – tentative report
• †Lystra – tentative report
• †Macginitiea
• †Machaeroides
• Macrocranion
• Magnolia
• †Maiorana
• †Mammacyon
• †Mammuthus
  • 

    Life restoration of a herd of Mammuthus columbi, or Columbian mammoths. The extent of the fur depicted is hypothetical. Charles R. Knight (1909).
    †Mammuthus columbi
• Marmota
• †Megacerops
• †Megalictis
  • †Megalictis ferox
• †Meliosma
• †Meniscotherium
• †Menoceras
• †Menops
• †Mentoclaenodon
• Mergus
  • †Mergus merganser
• 

  Life restoration of the Miocene three-toed horse Merychippus
  †Merychippus
• †Merychyus
• †Merycochoerus
• †Merycodus
• †Merycoides
• †Merycoidodon
• †Mesatirhinus
• †Mesocyon – report made of unidentified related form or using admittedly obsolete nomenclature
• †Mesodma
  • †Mesodma formosa
  • †Mesodma garfieldensis – or unidentified comparable form
  • †Mesodma hensleighi
  • †Mesodma pygmaea
• †Mesohippus
• †Mesonyx
  • †Mesonyx obtusidens – type locality for species
• †Mesoreodon
• 

  Life restoration of the Eocene pangolin relative Metacheiromys
  †Metacheiromys
• †Metamynodon
  • †Metamynodon planifrons – or unidentified comparable form
• †Metarhinus
• Metasequoia
  • †Metasequoia occidentalis
• †Metatomarctus
• †Miacis
• †Michenia
• †Microcosmodon
  • †Microcosmodon conus – type locality for species
  • †Microcosmodon rosei – type locality for species
• Microphysula – or unidentified comparable form
• †Microsyops
• Microtus
  • †Microtus pennsylvanicus
• †Mimetodon
  • †Mimetodon churchilli – type locality for species
• †Mimoperadectes
  • †Mimoperadectes houdei – type locality for species
• †Miniochoerus
• †Miocyon
• †Miohippus
• 

  Fossilized skeleton of the Eocene perch relative Mioplosus
  †Mioplosus
• †Miotapirus
  • †Miotapirus harrisonensis – type locality for species
• †Miotylopus
• †Miracinonyx
  • †Miracinonyx studeri
• †Mithrandir
• Mnemosyne
• †Monosaulax
• 

  Life restoration of the Miocene chalicothere mammal Moropus threatening a pair of the bear-dog Daphoenodon. Jay Matternes (1964).
  †Moropus
• Morus
• Mustela
  • †Mustela nigripes
• Myrica
• Myrmica
• †Nanotragulus
• †Neanis
• †Nelumbo
• †Neocathartes
  • †Neocathartes grallator
• †Neoliotomus
  • †Neoliotomus conventus
  • †Neoliotomus ultimus
• 

  Mounted fossilized skeleton of the Miocene Neophrontops
  Neophrontops
  • †Neophrontops americanus
• †Neoplagiaulax
  • †Neoplagiaulax grangeri – tentative report
  • †Neoplagiaulax hunteri
  • †Neoplagiaulax jepi – type locality for species
  • †Neoplagiaulax mckennai – type locality for species
  • †Neoplagiaulax nelsoni
• Neotoma
• †Nexuotapirus
• †Niglarodon
• †Notharctus
  • †Notharctus robustior
  • †Notharctus tenebrosus – type locality for species
  • †Notharctus venticolus
• 

  Fossilized skeleton of the Late Cretaceous-Eocene beaked salmon relative Notogoneus
  †Notogoneus
• †Nototamias – or unidentified comparable form
• †Nucifraga
  • †Nucifraga columbiana
• Numenius
  • †Numenius americanus
  • †Numenius borealis
• †Nyctea
  • †Nyctea scandiaca
• †Nyssa
• Ochotona
  • †Ochotona princeps
• Ocotea
• †Odaxosaurus
  • †Odaxosaurus piger
• Ondatra
• †Onoclea
• 

  Restoration of the Eocene bat Onychonycteris
  †Onychonycteris – type locality for genus
  • †Onychonycteris finneyi – type locality for species
• †Oodectes
• Ophryastes
• †Opisthotriton
• Oreamnos
• †Oreodontoides
• Oreohelix
• †Oreopanax
• †Ormiscus
• 

  Fossilized skeleton of the Eocene horse Orohippus
  †Orohippus
• †Orthogenysuchus – type locality for genus
  • †Orthogenysuchus olseni – type locality for species
• †Osbornodon
• †Osmanthus
• †Osmunda
• †Otarocyon
• †Otiorhynchus
• †Ototriton – type locality for genus
  • †Ototriton solidus – type locality for species
• Ovis
  • †Ovis canadensis
• †Oxyacodon
• †Oxyaena
• 

  Life restoration of a pair of the Oligocene-Miocene camel Oxydactylus. Robert Bruce Horsfall (1913).
  †Oxydactylus
• †Pachyaena
• Pachycondyla
• †Palaearctonyx
• †Palaeogale
• †Palaeolagus
• †Palaeonictis
• †Palaeoryctes
• †Palaeosinopa
• †Palaeosyops
• †Palatobaena – type locality for genus
• †Paleoamphiuma – type locality for genus
• Paliurus
• Panthera
  • 

    A living Panthera leo, or lion
    †Panthera leo
• †Pantolambda
• †Paracathartes
  • †Paracathartes howardae
• †Paracynarctus
• †Paraenhydrocyon
  • †Paraenhydrocyon josephi
• †Parahippus
• †Paramys
• †Parandrita
• †Paratomarctus
• †Paratylopus
• †Parectypodus
  • †Parectypodus lunatus
  • †Parectypodus sinclairi
  • †Parectypodus sylviae
• †Parictis
• †Parvitragulus
• 

  Life restoration of the Eocene creodont mammal Patriofelis. Charles R. Knight (1896).
  †Patriofelis
  • †Patriofelis ferox – type locality for species
• †Patriomanis
• †Peltosaurus
• †Pelycodus
• †Pentacosmodon
  • †Pentacosmodon pronus – type locality for species
• †Peratherium
• Perognathus
• Peromyscus
• Persea
• †Phalaenoptilus
  • †Phalaenoptilus nuttallii
• 

  Fossilized skeleton of the Paleocene-Eocene arowana relative Phareodus
  †Phareodus
  • †Phareodus encaustus
  • †Phareodus testis
• †Phenacocoelus
• †Phenacodontid
• †Phenacodus
• Phenacomys
• †Philodendron – or unidentified related form
• †Philotrox
  • †Philotrox condoni
• 

  Illustration of a fossilized skull in multiple views of the Oligocene-Miocene bone-crushing dog Phlaocyon
  †Phlaocyon
  • †Phlaocyon annectens
  • †Phlaocyon minor
• †Phoebe
• Phragmites – tentative report
• Phyllobius
• Physa
• Pica
  • †Pica pica
• †Piceoerpeton – type locality for genus
• Pinus
• Pipilo
  • †Pipilo chlorurus
• †Plagiomene
• †Planera
• †Planetetherium
  • †Planetetherium mirabile
• †Plastomenoides
• Platanus
• Platycarya
• Platynus
• Plecia
• 

  Life restoration of the Paleocene-Eocene primate Plesiadapis
  †Plesiadapis
  • †Plesiadapis cookei
• †Poabromylus
• †Poebrodon
• †Poebrotherium
• Polygyra
• Populus
• Porzana
  • †Porzana carolina
• †Potamogeton
• 

  Life restoration of the Paleocene-Eocene waterfowl Presbyornis
  †Presbyornis
• †Primobucco
• †Princetonia
• †Priscacara
• †Pristichampsus
• †Probathyopsis
• †Procaimanoidea
• †Procamelus
• †Prochetodon
  • †Prochetodon cavus – type locality for species
  • †Prochetodon foxi
  • †Prochetodon taxus – type locality for species
• †Procynodictis
• †Prolimnocyon
• †Promartes
• †Promerycochoerus
• †Proscalops
• 

  Life restoration of a female (left) and male of the Oligocene-Miocene even-toed ungulate Protoceras. Charles R. Knight (1896).
  †Protoceras
• †Protochelydra
  • †Protochelydra zangerli – or unidentified comparable form
• †Protohippus
• †Protolabis
• †Protomarctus
• †Protorohippus
• †Protostrix
• †Protungulatum
  • †Protungulatum donnae
• †Protylopus
• Prunus
• †Pseudaelurus
• †Pseudhipparion
• †Pseudocrypturus – type locality for genus
  • †Pseudocrypturus cercanaxius – type locality for species
• †Pseudolabis
• †Pseudoprotoceras
• †Psilota
• †Psittacotherium
• Ptelea
• Pteris – or unidentified related form
• Pterocarya
• 

  Fossilized skeleton of the Paleocene multituberculate mammal Ptilodus
  †Ptilodus
  • †Ptilodus fractus
  • †Ptilodus gnomus
  • †Ptilodus kummae
  • †Ptilodus mediaevus
  • †Ptilodus montanus – or unidentified comparable form
  • †Ptilodus tsosiensis – or unidentified comparable form
  • †Ptilodus wyomingensis – type locality for species
• Puma
  • †Puma concolor
• Pupilla – or unidentified comparable form
• †Pyramidula
• †Pyrocyon
• Quercus
• Quiscalus – or unidentified comparable form
• 

  Life restoration of the Miocene-Pliocene pronghorn Ramoceros and Cosoryx. Robert Bruce Horsfall (1913).
  †Ramoceros
• †Raphictis
• †Rhamnus
• Rhineura – type locality for genus
• Rhinoclemmys – report made of unidentified related form or using admittedly obsolete nomenclature
• Rhus
• †Rhyssa
• †Robinia
• Rosa
• Sabal
• †Saccoloma
• Salix
• †Salpinctes – or unidentified comparable form
  • †Salpinctes obsoletus
• †Salvinia
• 

  Fossilized skeleton of the Eocene monitor lizard Saniwa
  †Saniwa – type locality for genus
  • †Saniwa ensidens – type locality for species
• †Sapindus
• Sassafras
• †Scapherpeton
• †Schoepfia
• Sciara
• †Sciophila
• Sequoia
• †Sespia
• †Shoshonius
  • †Shoshonius bowni
  • †Shoshonius cooperi
• †Sialia
• †Sifrhippus
• †Simoedosaurus
• †Sinomenium – or unidentified related form
• 

  Fossilized skeleton of the Eocene-Oligocene creodont mammal Sinopa
  †Sinopa
• Siren
  • †Siren dunni – type locality for species
• Sitona
• Sloanea – or unidentified related form
• †Smilax
• †Smilodectes
  • †Smilodectes gracilis – type locality for species
  • †Smilodectes mcgrewi – type locality for species
• Sorex
  • †Sorex hoyi
• †Sparganium
• †Spathorhynchus – type locality for genus
  • †Spathorhynchus fossorium – type locality for species
  • †Spathorhynchus natronicus
• Spermophilus
  • †Spermophilus variegatus
• †Sphenocoelus
• Spirodela
• †Spiza
  • †Spiza americana
• Stagnicola
• †Stegobium
• †Steneofiber
• 

  Life restoration of the Oligocene-Miocene camel Stenomylus
  †Stenomylus
  • †Stenomylus gracilis
  • †Stenomylus hitchcocki
  • †Stenomylus keelinensis
• Sterculia
• †Stillingia
• Sturnella
  • †Sturnella neglecta
• †Stygimys
  • †Stygimys kuszmauli
• †Stylemys
• †Stylinodon
• †Styrax
• †Subhyracodon
• Surnia
  • †Surnia ulula
• †Suzanniwana – type locality for genus
  • †Suzanniwana patriciana – type locality for species
  • †Suzanniwana revenanta – type locality for species
• †Swartzia
• Sylvilagus
• Symplocos
• Synaptomys
• 

  Life restoration of the Miocene protoceratid mammal Syndyoceras
  †Syndyoceras
  • †Syndyoceras cooki
• Syrphus
• Tachycineta – or unidentified comparable form
  • †Tachycineta bicolor
• †Taeniolabis
  • †Taeniolabis taoensis
• Tamias
• †Tanymykter
• †Tapocyon
• †Tarka
• Taxidea
  • †Taxidea taxus
• Taxodium
• †Taxonus
• †Teilhardina
• 

  Restoration of the Miocene-Pliocene rhinoceros Teleoceras
  †Teleoceras
• †Telmatherium
• †Temnocyon
• †Tetraclaenodon
• Thelypteris
• †Thouinia
• †Thuja
• Tilia
• Tipula
• 

  Life restoration of the Paleocene pantodont mammal Titanoides
  †Titanoides
  • †Titanoides gidleyi – type locality for species
  • †Titanoides major
  • †Titanoides nanus – type locality for species
  • †Titanoides primaevus
• †Titanomyrma
  • †Titanomyrma lubei – type locality for species
• †Trapa
• †Trigenicus
• †Trigonias
• Trionyx
• †Tritemnodon
• †Tritoma
• †Triumfetta
• †Trogosus
• †Tropisternus
• †Trypodendron
• †Tsoabichi – type locality for genus
  • †Tsoabichi greenriverensis – type locality for species
• Turdus – or unidentified comparable form
  • †Turdus migratorius
• †Tylocephalonyx
• Tympanuchus
  • †Tympanuchus phasianellus
• Typha – or unidentified related form
• †Tytthaena
• †Uintacyon
• 

  Life restoration of the Eocene mammal Uintatherium
  †Uintatherium – type locality for genus
  • †Uintatherium anceps – type locality for species
• Ulmus
• Unio
• Ursus
  • †Ursus arctos
• †Ustatochoerus
• †Valenia
• †Valenopsalis
• †Vassacyon
• †Vauquelinia
• 

  Leaves and fruit of a living Viburnum.
  †Viburnum
• †Vinea – or unidentified comparable form
• Vitis
• †Viverravus
• Viviparus
• †Vulpavus
• Vulpes
  • †Vulpes vulpes
• †Woodwardia
• †Xanclomys
  • †Xanclomys mcgrewi – type locality for species
• †Xyronomys
• 

  Life restoration of the Miocene bear dog Ysengrinia
  †Ysengrinia
• †Zamia
• Zelkova
• Zenaida
• Zizyphus
• †Zodiolestes
• Zonotrichia
  • †Zonotrichia albicollis

References

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 7 August 2017.