List of the prehistoric life of Utah
Appearance
This list of the prehistoric life of Utah contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Utah.
Precambrian
The Paleobiology Database records no known occurrences of Precambrian fossils in Utah.
Paleozoic
Selected Paleozoic taxa of Utah
- †Acodus
- †Agnostus
- †Amphiscapha
- †Amplexus[clarification needed]
- †Annularia
- †Anomalocaris
- †Anomphalus
- †Archimedes
- †Arcuolimbus
- †Arenicolites
- †Artisia
†AsaphiscusFossil of the Cambrian trilobite Asaphiscus - †Athyris
- †Atrypa
- †Atrypa parva – or unidentified comparable form
- †Atrypid
- †Aulopora – tentative report
- †Aviculopecten
- †Aviculopecten girtyi
- †Aviculopecten kaibabensis – or unidentified comparable form
- †Aysheaia
- †Bathyuriscus
- †Beckwithia
- †Benthamaspis
- †Beyrichoceras
- †Biscoia
- †Bolbocephalus
- †Bonneterrina
- †Bourbonnella
- †Bowmania
†BranchiocarisLife restoration of the mysterious Cambrian animal Branchiocaris - †Brassicicephalus
- †Calamites
- †Calamites cistii – or unidentified comparable form
- †Calamites suckowii
- †Callipteris – tentative report
- †Callocladia
- †Camarotoechia
- †Campbelloceras – tentative report
†CanadaspisLife restoration of the Cambrian arthropod Canadaspis (left) - †Canadaspis perfecta – or unidentified comparable form
- †Canadia
- †Caninia
- †Cardiopteris
- †Carolinites
- †Cavusgnathus
- †Cedaria
- †Chancelloria
- †Chancia (genus)
- †Choia
- †Chondrites
- †Chonetes
- †Cladochonus
- †Cleiothyridina
- †Clonograptus
- †Coenites
†CompositaFossilized shell of the Late Devonian-Permian brachiopod Composita - †Coosella
- †Coosina
- †Cordaicarpus
- †Cordaites
- Crania
- †Cravenoceras
- †Crepicephalus
- †Cruziana
File:Ctenospondylus BW.jpg †CtenospondylusRestoration of the Permian synapsid (mammal precursor) Ctenospondylus - †Cybelopsis
- †Cyclopteris
- †Cystodictya
- †Deiracephalus
- Dentalium
- †Diadectes
- †Diagoniella
- †Dictyonema
†DidymograptusFossil of the Middle Ordovician graptolite Didymograptus - †Didymograptus nitidus – or unidentified comparable form
- †Dimeropygiella
- †Diplorrhina
- †Donaldina
- †Dresbachia
- †Echinaria[clarification needed]
- †Ectosteorhachis – or unidentified related form
- †Ehmaniella
- †Eldonia
- †Eleutherocentrus
- †Elrathia
- †Elrathina
- †Emeraldella
- †Endoceras
†EryopsLife restoration of the Carboniferous-Permian amphibian Eryops - †Euptychaspis
- †Fenestella
- †Forteyops
- †Genevievella
- †Girvanella
- †Gnathodus
- †Gogia
- †Goniatites
- †Gunterichthys – type locality for genus
- †Hamptonia
- †Haplophrentis
- †Hazelia
†HelicoprionLife restoration of the Permian Chimaera relative Helicoprion - †Hematites
- †Hemirhodon
- †Hindia[clarification needed]
- †Hintzeia
- †Homagnostus
- †Huronia
- †Hyolithellus
- †Hyolithes
- †Idiognathodus
- †Illaenus
- †Irvingella[clarification needed]
- †Jeffersonia
- †Kanoshia
- †Kawina
- †Kingstonia
- †Kirkella[clarification needed]
- †Komia[clarification needed]
- †Kootenia
- †Lachnostoma
†LeanchoiliaLife restoration in multiple views of the Cambrian arthropod Leanchoilia - †Lejopyge
- †Lepidodendron
- †Lepidophyllum
- †Lepidostrobus
- †Leptomitus
- Lima[clarification needed]
- Limatula
- Lingula
- †Lingulella
- †Llanoaspis
- †Lochriea
- †Lonchocephalus
- †Lyracystis
- †Margaretia
- †Marpolia
- †Matthevia
†MetacocerasFossilized shell of the Carboniferous-Permian nautiloid cephalopod Metacoceras - †Meteoraspis
- †Micromitra
- Modiolus – report made of unidentified related form or using admittedly obsolete nomenclature
- †Mollisonia
- †Morania
- †Naraoia
- †Naticopsis
- †Neospirifer
- †Neuropteris
- †Niobe[clarification needed] – tentative report
- †Nisusia
- †Norwoodia
- †Obolus[clarification needed]
- †Ogygopsis
- †Olenellus
- †Olenoides
†OphiacodonLife restoration of the Carboniferous-Permian synapsid (mammal precursor) Ophiacodon - †Orthis
- †Oryctocephalus
- †Ottoia
- †Ozarkodina
- †Pagetia
- †Paladin[clarification needed]
- Palaeoaplysina
- †Palaeoscolex
- †Pelagiella
- †Pentamerus
- †Peronopsis
- †Perspicaris
- †Phillipsia
- †Phyllograptus
- Pinna – report made of unidentified related form or using admittedly obsolete nomenclature
- †Platycrinites
†Platyhystrix – or unidentified comparable formLife restoration of the Carboniferous-Permian sail-backed amphibian Platyhystrix - †Prodentalium
- †Prohedinia
- †Protopliomerella
- †Protospongia
- †Ptychagnostus
- †Pugnax[clarification needed]
- †Punka[clarification needed]
- †Quadratia
- †Rayonnoceras
†ReceptaculitesFossil of the Early Ordovician-Permian benthic alga Receptaculites - †Ribeiria
- †Rusophycus
- †Saukiella
- †Scenella
- †Schmalenseeia
- †Schwagerina
- †Scolicia
- †Selkirkia
- †Selkirkia columbia – or unidentified comparable form
- †Sidneyia
- †Sigillaria
SphenacodonLife restoration of the Carboniferous-Permian synapsid (mammal precursor) Sphenacodon - †Sphenophyllum
- †Sphenopteris
- †Spinofacia – type locality for genus
- †Spirifer
- †Spiriferina
- Spirorbis
- †Stenorhachis – tentative report
†StigmariaFossil preserved in situ of a Carboniferous tree-like club moss relative with attached Stigmaria rhizome system - †Syringopora
- †Teichichnus – tentative report
- †Terranovella
- †Tetragraptus
- †Thalassinoides – tentative report
- †Tricrepicephalus
- †Trigonocercella
- †Trinodus
- †Triplagnostus
- †Trocholites
- †Tseajaia
- †Tseajaia campi – type locality for species
- †Tuzoia
†Utaherpeton – type locality for genusLife restoration of the Carboniferous amphibian Utaherpeton - †Vauxia
- †Walcottoceras – tentative report
- †Waptia
- †Waptia fieldensis – or unidentified comparable form
- †Weeksina
- †Wilkingia
- †Wiwaxia
- †Worthenia
- †Xenacanthus – or unidentified related form
- †Yuknessia
- †Zacanthoides
- †Zittelloceras
Mesozoic
Selected Mesozoic taxa of Utah
- †Abydosaurus – type locality for genus
- †Abydosaurus mcintoshi – type locality for species
- †Acristavus
- †Adelolophus – type locality for genus
- †Adelolophus hutchisoni – type locality for species
- †Adocus
- †Alamosaurus
- †Albanerpeton
- †Albanerpeton cifellii – type locality for species
- †Albanerpeton galaktion
- †Albanerpeton gracilis
- †Albanerpeton nexuosus
- †Allocrioceras
†AllosaurusLife restoration of the Late Jurassic theropod dinosaur Allosaurus - †Alphadon
- †Alphadon attaragos
- †Alphadon eatoni – type locality for species
- †Alphadon halleyi
- †Alphadon marshi – or unidentified comparable form
- †Alphadon sahnii
- †Amblotherium
- †Ameribaatar – type locality for genus
- †Ameribaatar zofiae – type locality for species
AmiaA living Amia, or bowfin - †Anaflemingites
- †Anasibirites
- †Anchisauripus
- †Anemia
†Animantarx – type locality for genusMounted fossilized skeleton of the Cretaceous armored dinosaur Animantarx - †Animantarx ramaljonesi – type locality for species
- Anomia
- †Anomoepus
- †Apatopus
- †Apatosaurus
- †Apatosaurus louisae – type locality for species
- †Araeodon
- †Araucarioxylon
- †Arctoceras
- †Arctoprionites
- †Arvinachelys – type locality for genus
- †Aspenites
- Astarte
- Asteriacites
- †Astroconodon
- †Astroconodon delicatus – type locality for species
- †Atreipus
†Aublysodon – tentative reportIllustration of fossilized teeth from the Late Cretaceous tyrannosaur Aublysodon - †Baena
- †Barosaurus
- †Basilemys
- †Bernissartia
- †Brachauchenius
- †Brachiosaurus
- †Brachyphyllum
- †Brontomerus – type locality for genus
- †Brontomerus mcintoshi – type locality for species
- †Brontopodus
†BrontosaurusLife restoration of a herd of the Late Jurassic sauropod dinosaur Brontosaurus - †Bryceomys
- †Bryceomys fumosus – type locality for species
- †Bryceomys hadrosus
- †Bryceomys intermedius – type locality for species
- †Calycoceras
- †Camarasaurus – type locality for genus
- †Camarasaurus lentus – type locality for species
- Campeloma
- †Camptosaurus
- †Carmelopodus – type locality for genus
- †Cassiope
- †Cedaromys
- †Cedaromys bestia – type locality for species
- †Cedaromys parvus – type locality for species
- †Cedarosaurus – type locality for genus
- †Cedarosaurus weiskopfae – type locality for species
- †Cedarpelta – type locality for genus
- †Cedarpelta bilbeyhallorum – type locality for species
- †Cedrorestes – type locality for genus
- †Cedrorestes crichtoni – type locality for species
- †Ceratodus
†CeratosaurusRestoration of the Late Jurassic ceratosaur Ceratosaurus - Cerithiopsis
- †Chamops
- †Chinlea – type locality for genus
- †Chirotherium
- †Chirotherium rex – or unidentified comparable form
- Chlamys
- †Chondrites
- †Cimexomys
- †Cimexomys antiquus – or unidentified comparable form
- †Cimolodon
- †Cimolodon electus
- †Cimolodon nitidus – or unidentified comparable form
- †Cimolodon similis
†CimolomysLife restoration of the face of the Late Cretaceous multituberculate mammal Cimolomys - †Cimolomys clarki
- †Cimolomys milliensis – type locality for species
- Cladophlebis
- †Claraia
- †Coelophysis – tentative report
- †Coelurus
- †Compsemys
- †Coniophis
CorbulaShell of a Corbula basket clam - †Cretorectolobus
- †Ctenacodon
- †Cteniogenys
- Cucullaea
- †Cycadeoidea
- Cylichna
- †Dakotamys
- †Dakotamys malcolmi – type locality for species
- †Dakotasuchus
- †Deinonychus
- †Denazinemys
- Dentalium
†Diabloceratops – type locality for genusRestoration of the Late Cretaceous horned dinosaur Diabloceratops - †Diabloceratops eatoni – type locality for species
- †Dinehichnus – type locality for genus
- †Dinochelys – type locality for genus
- †Diplodocus
- Discinisca – report made of unidentified related form or using admittedly obsolete nomenclature
- †Docodon
- †Dolichorhynchops
- †Dolichorhynchops tropicensis – type locality for species
†DoswelliaRestoration of the Late Triassic reptile Doswellia - †Dryolestes
- †Dryosaurus
- †Dystrophaeus – type locality for genus
- †Dystrophaeus viaemalae – type locality for species
- Elliptio
- †Enchodus
- †Enneabatrachus
- †Entradasuchus – type locality for genus
- †Entradasuchus spinosus – type locality for species
- †Eocephalites
- †Eodelphis
†Eolambia – type locality for genusIllustration of a reconstructed skull and restorative portrait of the Late Cretaceous primitive duck-billed dinosaur Eolambia - †Eolambia caroljonesa – type locality for species
- †Eopolycotylus – type locality for genus
- †Eopolycotylus rankini – type locality for species
- †Equisetum
- †Eryma
- †Eucalyptus
- †Eunaticina
- †Euomphaloceras
- †Euspira
- †Euthlastus
- †Eutretauranosuchus
- †Exogyra
- †Fabrosaurus – tentative report
†Falcarius – type locality for genusFossilized skeleton of the Early Cretaceous therizinossaur Falcarius - †Falcarius utahensis – type locality for species
- Ficus
- †Flemingites
- †Gastonia – type locality for genus
- †Gastonia burgei – type locality for species
- †Geminiraptor
- †Germanonautilus – tentative report
- †Gervillaria
†GervilliaFossilized shell of the Carboniferous-Eocene bivalve Gervillia - Gleichenia
- †Glirodon – type locality for genus
- †Glirodon grandis – type locality for species
- Globularia – tentative report
- †Glyptops
- †Gondolella
- †Goniobasis – tentative report
- †Goniopholis
- †Grallator
- †Gryphaea
†GryposaurusMounted fossilized skeleton of the Late Cretaceous duck-billed dinosaur Gryposaurus - †Gryposaurus monumentensis – type locality for species
- †Hagryphus – type locality for genus
- †Hagryphus giganteus – type locality for species
- †Hamulus – tentative report
- †Hausmania
- †Hedenstroemia
- †Hemicalypterus – type locality for genus
- †Hippodraco – type locality for genus
- †Hippodraco scutodens – type locality for species
- †Hispanosauropus
- †Homalopoma
- †Hoplitosaurus – or unidentified comparable form
- †Hoplosuchus – type locality for genus
- †Hoplosuchus kayi – type locality for species
- †Hybodus
- †Iguanacolossus – type locality for genus
- †Iguanacolossus fortis – type locality for species
- †Iguanodon
- †Iguanodon ottingeri – type locality for species
- Ilex
†InoceramusFossilized shell of the Early Jurassic-Late Cretaceous marine bivalve Inoceramus with a human indicating its size - †Inoceramus albertensis – or unidentified comparable form
- †Inoceramus flavus
- †Inoceramus gilberti
- †Inoceramus koeneni
- †Inoceramus pictus
- †Inoceramus tenuistriatus – tentative report
- †Inoceramus undabundus
- †Inyoites
- †Inyoites beaverensis – type locality for species
- †Inyoites oweni
- †Iridotriton – type locality for genus
- †Ischyrhiza – or unidentified comparable form
IsognomonFossilized shell of the Permian-modern marine bivalve Isognomon - †Janumys – type locality for genus
- †Janumys erebos – type locality for species
- †Janumys erebros
- †Jugulator
- †Kallirhynchia
- †Kamerunoceras
- †Kayentapus
- †Koparion – type locality for genus
- †Koparion douglassi – type locality for species
†Kosmoceratops – type locality for genusLife restoration of the Late Cretaceous horned dinosaur Kosmoceratops - †Kosmoceratops richardsoni – type locality for species
- †Kouphichnium
- †Leidyosuchus
- †Lepidotes
- Lepisosteus
- †Leptalestes
- Lima
- †Lissodus
- †Lonchidion
- Lopha
- Lucina
†Lythronax – type locality for genusLife restoration of the Late Cretaceous tyrannosaur Lythronax - †Lythronax argestes – type locality for species
- †Machairoceratops – type locality for genus
- †Machairoceratops cronusi – type locality for species
- †Macroelongatoolithus
- Magnolia
- †Mammites
- †Marshosaurus – type locality for genus
- †Marshosaurus bicentesimus – type locality for species
- †Martharaptor – type locality for genus
- †Martharaptor greenriverensis – type locality for species
- †Meekoceras
- †Meekoceras davisi
- †Meekoceras gracilitatis
- †Meekoceras millardense – type locality for species
- †Meekoceras olivieri – type locality for species
- †Megalosauripus
- †Megasphaeroceras
- †Melvius
- †Melvius chauliodous – or unidentified comparable form
- †Meniscoessus
- †Mesodma
- †Mesodma formosa – or unidentified comparable form
- †Mesodma hensleighi – or unidentified comparable form
- †Mesodma minor – or unidentified comparable form
- †Mesodma thompsoni – or unidentified comparable form
- †Metoicoceras
†Moabosaurus – type locality for genusMounted fossilized skeletons of the Early Cretaceous long-necked dinosaur Moabosaurus - Modiolus
- †Monanthesia
- †Myledaphus
- †Myophorella
- †Myophoria
- †Mytilus
- †Naomichelys
†Nasutoceratops – type locality for genusKnown material diagram of the Late Cretaceous horned dinosaur Nasutoceratops - †Nasutoceratops titusi – type locality for species
- †Naticopsis
- †Naticopsis depressispira
- †Naticopsis fenestravella – type locality for species
- †Naticopsis utahensis – type locality for species
- †Nedcolbertia – type locality for genus
- †Neocardioceras
- †Nerinea – tentative report
- Neritina
- †Nezpercius
- †Normannites – tentative report
†NothronychusMounted fossilized skeleton of the Late Cretaceous Nothronychus - †Nothronychus graffami – type locality for species
- Nucula
- †Odaxosaurus
- †Odaxosaurus piger – or unidentified comparable form
- †Odaxosaurus priscus
- †Odaxosaurus roosevelti – type locality for species
- †Opisthias
- †Ornithomimus
- Ostrea
†OthnielosaurusMounted fossilized skeleton of the Late Jurassic herbivorous dinosaur Othnielosaurus - †Otozoum
- †Ovaloolithus
- †Ovaloolithus tenuisus – type locality for species
- †Ovaloolithus utahensis – type locality for species
- †Owenites
- †Pagiophyllum
- †Palmulasaurus – type locality for genus
- †Palmulasaurus quadratus – type locality for species
- †Paracimexomys
- †Paracimexomys judithae – or unidentified comparable form
- †Paracimexomys magnus
- †Paracimexomys perplexus – type locality for species
- †Paracimexomys priscus – or unidentified comparable form
- †Paracimexomys robisoni – type locality for species
- †Paramacellodus
†ParasaurolophusMounted fossilized skeleton of the Late Cretaceous duck-billed dinosaur Parasaurolophus - †Paronychodon – or unidentified comparable form
- †Parotosuchus
- †Peloroplites – type locality for genus
- †Peloroplites cedrimontanus – type locality for species
- Pholadomya
- †Pinacosuchus – type locality for genus
- †Pinacosuchus mantiensis – type locality for species
- Pinna
- †Pistia – report made of unidentified related form or using admittedly obsolete nomenclature
†PlacenticerasFossilized shell of the Late Cretaceous ammonoid cephalopod Placenticeras - †Plagiostoma
- †Planicoxa – type locality for genus
- †Planicoxa venenica – type locality for species
- †Planolites
- †Pleuronautilus
- Pleurotomaria – tentative report
- Plicatula
- †Poposaurus
- †Preprismatoolithus
- †Priacodon
- †Prismatoolithus
- †Prismatoolithus jenseni – type locality for species
- †Proplacenticeras
- †Protocardia
- †Pseudomelania
- †Pseudotetrasauropus
- †Pteraichnus
- †Pteraichnus saltwashensis – or unidentified comparable form
- †Pteraichnus stokesi – or unidentified comparable form
- Pycnodonte
†RedondasaurusFossilized skeleton of the Late Triassic phytosaur Redondasaurus - †Rhadinosteus – type locality for genus
- †Rhadinosteus parvus – type locality for species
- †Rhynchonella – report made of unidentified related form or using admittedly obsolete nomenclature
- †Richardoestesia
- †Richardoestesia isosceles – or unidentified comparable form
- Rogerella
- Salix
- †Sauropelta – or unidentified comparable form
- †Scapherpeton
- †Schillerosaurus – type locality for genus
- †Scotiophryne
- †Scoyenia
†Seitaad – type locality for genusKnown material diagram of the Early Jurassic primitive long-necked dinosaur Seitaad - †Seitaad ruessi – type locality for species
- †Semionotus
- †Semionotus kanabensis – type locality for species
- Serpula
- †Sexta
- †Siats – type locality for genus
- †Siats meekerorum – type locality for species
- †Skolithos
- Solemya
- †Spheroolithus
- Spirorbis – report made of unidentified related form or using admittedly obsolete nomenclature
- †Squatirhina
- †Stagonolepis
- †Stegopodus – type locality for genus
†StegosaurusRestoration of the Late Jurassic stegosaur Stegosaurus - †Stegosaurus stenops – or unidentified comparable form
- †Stegosaurus ungulatus
- †Stephanoceras
- †Stokesosaurus – type locality for genus
- †Stokesosaurus clevelandi – type locality for species
- †Talos – type locality for genus
- †Talos sampsoni – type locality for species
- †Tanycolagreus
- †Tempskya
- †Tempskya jonesii – type locality for species
- †Tempskya knowltoni
- †Tempskya minor
- †Tempskya superba
- †Tempskya whiteheadi – type locality for species
- †Tenontosaurus
†Teratophoneus – type locality for genusKnown material diagram of the Late Cretaceous tyrannosaur Teratophoneus - †Teratophoneus curriei – type locality for species
- Teredolites
- †Tetrasauropus
- †Thalassinoides
- †Therangospodus – type locality for genus
- †Theretairus
- Thracia
- †Torvosaurus
- †Toxolophosaurus – or unidentified comparable form
- †Trachodon
†TriceratopsMounted fossilized skeleton of the Late Cretaceous horned dinosaur Triceratops - †Triconolestes – type locality for genus
- †Triconolestes curvicuspis – type locality for species
- †Trigonia
- †Trinacromerum
- †Trinacromerum bentonianum – tentative report
- †Trisauropodiscus
- Turritella
- †Tyrannosauripus – type locality for genus
- †Ussurites
- †Utahceratops – type locality for genus
- †Utahceratops gettyi – type locality for species
†Utahraptor – type locality for genusDiagram illustrating the Early Cretaceous dromaeosaurid ("raptor") Utahraptor with an anachronistic human to scale - †Utahraptor ostrommaysi – type locality for species
- †Uteodon
- Valvata
- †Vancleavea
- †Venenosaurus – type locality for genus
- †Venenosaurus dicrocei – type locality for species
- †Vex
- Viviparus
- †Worthenia
- †Worthenia windowblindensis – type locality for species
- †Wyomingites
- †Xenoceltites
†Yurgovuchia – type locality for genusLife restoration of the Early Cretaceous dromaeosaurid ("raptor") Yurgovuchia - †Yurgovuchia doellingi – type locality for species
- †Zamites
- †Zamites powelli
- †Zamites tidwellii – type locality for species
Cenozoic
Selected Cenozoic taxa of Utah
- Abies
- †Acrocera
- †Agriochoerus
- Alligator
†Allognathosuchus – or unidentified comparable formFossilized skeleton of the Late Cretaceous-Oligocene Alligator relative Allognathosuchus - Amia
- Amyda
- †Anosteira
- Anthonomus
- Antilocapra
- †Antilocapra americana – or unidentified comparable form
- Apalone
†ArctodusRestoration of an Arctodus, or short-faced bear, with a human to scale - †Artemisia
- †Baena
- †Basirepomys
- †Bembidium
- Bison
- †Bison latifrons – tentative report
- †Bittacus
- †Bootherium
- †Boverisuchus
- †Boverisuchus vorax – type locality for species
- †Brachyhyops
- Brachylagus
- †Brachylagus idahoensis – or unidentified comparable form
†CamelopsLife restoration of the Pliocene-Holocene camel Camelops - †Camelops hesternus – or unidentified comparable form
- Camponotus
- Canis
- †Canis dirus – or unidentified comparable form
- †Canis latrans – tentative report
- †Canis lupus
- †Catopsalis
- †Champsosaurus
- Chara
- Cheilosia
- †Chipetaia
- †Chipetaia lamporea – type locality for species
- †Chisternon
- †Chriacus
- †Colodon
- †Compsemys
- †Coniatus
†CoryphodonLife restoration of the Paleocene-Eocene pantodont mammal Coryphodon. Heinrich Harder (1920). - Crocodylus
- †Crocodylus acer – type locality for species
- †Crocodylus affinis
- Culex
- †Cuterebra
- Dicranomyia
- †Dinohippus
- †Diplacodon
- †Diprionomys
- †Duchesnehippus
- †Duchesneodus
- †Echmatemys
- †Ectoconus
- †Elliptio
†EobasileusLife restoration of a pair of the Eocene uintathere mammal Eobasileus. Charles R. Knight (1890s). - †Eoconodon
- †Eonessa – type locality for genus
- †Eonessa anaticula – type locality for species
- †Epicaerus
- †Epihippus
- †Epiphanis
- Equus
- †Equus conversidens – tentative report
- Erethizon
- †Erethizon dorsatum – tentative report
- †Eucastor
†Euglossopteryx – type locality for genusFossil of the Eocene bee Euglossopteryx - †Euglossopteryx biesmeijeri – type locality for species
- Eutamias
- †Goniacodon
- †Hadrianus
- †Haplolambda – or unidentified comparable form
- †Harpagolestes
- †Helaletes
- †Helodermoides – tentative report
- †Herpetotherium
- †Heteraletes
- †Hoplochelys
†HyaenodonLife restoration of the Eocene-Miocene creodont mammal Hyaenodon - †Hyaenodon vetus – or unidentified comparable form
- Hydrobia – or unidentified comparable form
- †Hylobius
- †Hyopsodus
- †Hypohippus
- †Hypolagus
- †Hyrachyus
- †Hyracodon
- †Hyracotherium
- †Kimbetohia
- Laccophilus
- †Lambdotherium
- Lemmiscus
- Lepisosteus
†LeptomeryxLife restoration of the Eocene-Oligocene even-toed ungulate Leptomeryx - †Leptoreodon
- †Leptotragulus
- Lepus
- †Lepus townsendii – or unidentified comparable form
- †Limnocyon
- †Limnocyon verus – or unidentified comparable form
- Lynx
- †Lynx canadensis – or unidentified comparable form
- †Mammut
- †Mammuthus
- †Mammuthus columbi
†Mammuthus primigeniusLife restorations of a Mammut americanum, or American mastodon (right), and a Mammuthus primigenius, or wooly mammoth (left)
- †Megalonyx
- †Menops
- †Merriamoceros
- †Mesonyx
- †Metaliomys – type locality for genus
- †Metarhinus
- †Metatelmatherium
†MiacisLife restoration of the Paleocene-Eocene mammal Miacis - †Microsyops
- Microtus
- †Miocyon
- Mustela
- †Mustela erminea – tentative report
- †Mustela vison
- †Nemotelus
- †Neoplagiaulax
- Neotamias
- Neotoma
- †Notharctus
- †Notharctus tenebrosus – or unidentified comparable form
- Odocoileus
- Ondatra
- †Oodectes – tentative report
- Ophryastes
- †Oxyacodon
†ParamylodonFossilized skeleton of the Pliocene-Pleistocene ground sloth Paramylodon - †Paramylodon harlani – or unidentified comparable form
- †Paramys
- †Parectypodus
- †Paronychomys
- †Peratherium
- Peromyscus
- Phenacomys
- Phyllobius
- †Phyllophaga
- Physa
- Picea
- Pinus
- †Plastomenoides
- Plecia
- †Poabromylus
- †Poebrodon
- †Polemonium – or unidentified comparable form
†Presbyornis – type locality for genusLife restoration of the Paleocene-Eocene waterfowl Presbyornis - †Procaimanoidea – type locality for genus
- †Procaimanoidea utahensis – type locality for species
- †Procas
- †Procynodictis
- †Prodaphaenus
- †Protitanotherium
- †Protylopus
- †Proviverra
- †Ptilodus
- †Ptilodus mediaevus
- †Ptilodus tsosiensis – or unidentified comparable form
- Rhinoclemmys – report made of unidentified related form or using admittedly obsolete nomenclature
- †Saniwa
- †Sargus
- †Sinopa
- †Smilodectes
†SmilodonLife restoration of the Pleistocene-Holocene saber-tooth cat Smilodon - †Smilodon fatalis – or unidentified comparable form
- Sorex
- Spermophilus
- †Spermophilus armatus – or unidentified comparable form
- †Sphenocoelus
- †Sthenodectes
- †Stygimys
- †Stylemys
†StylinodonLife restoration of the Eocene taeniodont mammal Stylinodon - †Taeniolabis
- †Tapocyon
- Taxidea
- Thomomys
- †Trogosus
- †Tylocephalonyx
- †Uintacyon
†UintatheriumLife restoration of the Eocene mammal Uintatherium - †Valenia
- †Viverravus
- Viviparus
- Vulpes
- Zapus
References
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 7 August 2017.
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