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.

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

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

•  

  †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

•  

  †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

•  

  †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

•  

  †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

•  

  †Helicoprion
  • †Helicoprion davisii
• †Homagnostus
• †Hyolithes
• †Hypseloconus
• †Idiognathoides
• †Ithyektyphus
• †Janassa
• †Kendallina
• †Kingstonia
• †Kionoceras
• †Kochoceras
• †Lambeoceras
• † Leclercqia
• †Lingula
• †Lingulella
• †Liroceras
• †Lonchocephalus
• †Maryvillia
• †Metacoceras

•  

  †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

•  

  †Plaesiomys
• †Platyceras
• †Platystrophia
• †Posidonia
• †Prodentalium
• †Protaspis
• †Pseudomelania – tentative report
• †Psilophyton
• †Rawlinsella
• †Renalia
• †Sallya

•  

  †Saukiella
• †Sawdonia
• Solemya
• †Solenochilus
• †Spiriferina
• †Spyroceras
• †Stearoceras
• †Streptognathodus
• †Strophomena
• †Syspacheilus
• †Tainoceras
• †Tetrataxis

•  

  †Tricrepicephalus
• †Uncaspis
• †Uranolophus
• †Westonoceras
• †Wilkingia
• †Winnipegoceras
• †Worthenia
• †Zellerina

•  

  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

•  

  †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

•  

  †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

•  

  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

•  

  †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

•  

  †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

•  

  †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

•  

  †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

•  

  †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

•  

  †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

•  

  †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

•  

  †Deinonychus
  • †Deinonychus antirrhopus
• †Deltatheroides – or unidentified comparable form
• †Dennstaedtia
• Dentalium
  • †Dentalium pauperculum
• †Derrisemys
• †Desmatosuchus
• †Dicotyledon

•  

  †Didelphodon
• †Didymoceras
  • †Didymoceras nebrascense
  • †Didymoceras stevensoni
• †Dinochelys
• †Diospyros
• †Diplocraterion
• †Diplodocinae

•  

  †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

•  

  †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

  •  

    †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

•  

  †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

•  

  †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

•  

  †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

•  

  †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

•  

  †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

•  

  †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

•  

  †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

•  

  †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

•  

  †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

•  

  †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 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

•  

  †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 – 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

•  

  †Platecarpus
  • †Platecarpus tympaniticus
• †Platymya
• †Platypterygius
• †Plesiobaena
• †Plesiopleurodon – type locality for genus
  • †Plesiopleurodon wellesi – type locality for species
• †Plesiosaurus
• Plicatula
• Polinices
• †Polycotylus

•  

  †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

•  

  †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

•  

  †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

•  

  †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

•  

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

•  

  Squalicorax
  • †Squalicorax kaupi
  • †Squalicorax pristodontus
• †Squatirhina
  • †Squatirhina americana – type locality for species
• †Staphylea
• †Stegopelta – type locality for genus
  • †Stegopelta landerensis – type locality for species

•  

  †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

•  

  †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

•  

  †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

•  

  †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

•  

  †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

•  

  †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

• †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

•  

  †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
• 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

•  

  †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

•  

  †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

•  

  †Boavus – type locality for genus
• Boletina
• †Bootherium
  • †Bootherium bombifrons
• †Borealosuchus
  • †Borealosuchus formidabilis
  • †Borealosuchus wilsoni – type locality for species
• †Boverisuchus
  • †Boverisuchus vorax

•  

  †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

  •  

    †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

•  

  †Ceratosuchus
  • †Ceratosuchus burdoshi
• Cercidiphyllum
• †Cercopis
• †Champsosaurus
• Chara
• Charadrius
  • †Charadrius montanus
  • †Charadrius vociferus
• Charina
• Cheilosia
• †Chelomophrynus – type locality for genus
• †Chilostigma – tentative report
• Chironomus

•  

  †Chisternon
• †Cholula
• †Choragus
• †Chordeiles
  • †Chordeiles minor
• †Chriacus
  • †Chriacus oconostotae
• †Cimolestes
• Cinnamomum
• Circus
  • †Circus cyaneus
• Cissus
• †Cixius – tentative report

•  

  Cladrastis
• †Cnemidaria
• †Coccothraustes
  • †Coccothraustes vespertinus
• Cocculus
• Colaptes
  • †Colaptes auratus
• †Colodon
• †Compsemys
• †Coniophis
• †Copecion
• †Copelemur
• †Corizus – tentative report

•  

  †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

  •  

    †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

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.