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

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

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
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

Selected Cenozoic taxa of Wyoming

†Abuta – or unidentified related form
†Acacia
Accipiter
- †Accipiter gentilis
- 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
- 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
- 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
- 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
- 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
bone-crushing dog Cormocyon
†Cormocyon

Cornus

Corvus

†Corvus brachyrhynchos
†Corvus corax

†Corylus

†Coryphodon

Crataegus

†Credneria

Crocodylus

Crocodylus affinis
– type locality for species

†Cryptocephalus

Cryptorhynchus

Cryptotis

Culex

Cyclocarya

†Cynarctoides

†Cynarctoides acridens
†Cynarctoides harlowi
†Cynarctoides luskensis
– type locality for species

†Dalbergia

†Daphoenictis

†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

†Diplomystus

†Diplomystus dentatus

†Dipoides

Dipteronia

Discus

†Dissacus

†Distylium

Dolichopus

†Dombeya

†Domnina

†Drimys

Dryopteris

†Echmatemys

†Ectocion

†Ectoconus

†Ectopistes

†Ectopistes migratorius

†Ectopocynus

†Elaeodendron

†Enhydrocyon

†Enhydrocyon basilatus

Enochrus

†Entelodon

†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

†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

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

†Helodermoides

†Helodermoides tuberculatus

†Hemiauchenia

Hemitelia

†Heptodon

†Herpetotherium

†Herpetotherium knighti

†Hesperocyon

†Heteraletes

Hirundo – or unidentified comparable form

†Hirundo pyrrhonota

†Holospira

†Homogalax

†Hoplophoneus

†Hovenia

†Hutchemys

†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

†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

†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

†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

†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

Mammuthus columbi

Marmota

†Megacerops

†Megalictis

†Megalictis ferox

†Meliosma

†Meniscotherium

†Menoceras

†Menops

†Mentoclaenodon

Mergus

†Mergus merganser

†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

†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

†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

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

†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

†Onychonycteris – type locality for genus

†Onychonycteris finneyi
– type locality for species

†Oodectes

Ophryastes

†Opisthotriton

Oreamnos

†Oreodontoides

Oreohelix

†Oreopanax

†Ormiscus

†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

†Oxydactylus

†Pachyaena

Pachycondyla

†Palaearctonyx

†Palaeogale

†Palaeolagus

†Palaeonictis

†Palaeoryctes

†Palaeosinopa

†Palaeosyops

†Palatobaena – type locality for genus

†Paleoamphiuma – type locality for genus

Paliurus

Panthera

Panthera leo

†Pantolambda

†Paracathartes

†Paracathartes howardae

†Paracynarctus

†Paraenhydrocyon

†Paraenhydrocyon josephi

†Parahippus

†Paramys

†Parandrita

†Paratomarctus

†Paratylopus

†Parectypodus

†Parectypodus lunatus
†Parectypodus sinclairi
†Parectypodus sylviae

†Parictis

†Parvitragulus

†Patriofelis

†Patriofelis ferox
– type locality for species

†Patriomanis

†Peltosaurus

†Pelycodus

†Pentacosmodon

†Pentacosmodon pronus
– type locality for species

†Peratherium

Perognathus

Peromyscus

Persea

†Phalaenoptilus

†Phalaenoptilus nuttallii

†Phareodus

†Phareodus encaustus
†Phareodus testis

†Phenacocoelus

†Phenacodontid

†Phenacodus

Phenacomys

†Philodendron – or unidentified related form

†Philotrox

†Philotrox condoni

†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

†Plesiadapis

†Plesiadapis cookei

†Poabromylus

†Poebrodon

†Poebrotherium

Polygyra

Populus

Porzana

†Porzana carolina

†Potamogeton

†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

†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

†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

†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

†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

†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

†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

†Syndyoceras

†Syndyoceras cooki

Syrphus

Tachycineta – or unidentified comparable form

†Tachycineta bicolor

†Taeniolabis

†Taeniolabis taoensis

Tamias

†Tanymykter

†Tapocyon

†Tarka

Taxidea

†Taxidea taxus

Taxodium

†Taxonus

†Teilhardina

†Teleoceras

†Telmatherium

†Temnocyon

†Tetraclaenodon

Thelypteris

†Thouinia

†Thuja

Tilia

Tipula

†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

†Uintatherium – type locality for genus

†Uintatherium anceps
– type locality for species

Ulmus

Unio

Ursus

†Ursus arctos

†Ustatochoerus

†Valenia

†Valenopsalis

†Vassacyon

†Vauquelinia

†Viburnum

†Vinea
– or unidentified comparable form

Vitis

†Viverravus

Viviparus

†Vulpavus

Vulpes

†Vulpes vulpes

†Woodwardia

†Xanclomys

†Xanclomys mcgrewi
– type locality for species

†Xyronomys

†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.