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 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
• † Martinectes
  • † Martinectes bonneri – type locality for species
• † 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
• † 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 17 December 2021.