List of the prehistoric life of Utah

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

Main article: List of the Paleozoic life of Utah

Selected Paleozoic taxa of Utah

• †Acodus
• †Agnostus
• †Amphiscapha
• †Amplexus
• †Annularia
  • †Annularia stellata
• †Anomalocaris
• †Anomphalus
• †Archimedes
  • †Archimedes macfarlani
• †Arcuolimbus
• †Arenicolites
• †Artisia
• 

  Fossil of the Cambrian trilobite Asaphiscus
  †Asaphiscus
  • †Asaphiscus wheeleri
• †Athyris
  • †Athyris lamellosa
• †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
• 

  Life restoration of the mysterious Cambrian animal Branchiocaris
  †Branchiocaris
• †Brassicicephalus
• †Calamites
  • †Calamites cistii – or unidentified comparable form
  • †Calamites suckowii
• †Callipteris – tentative report
• †Callocladia
• †Camarotoechia
• †Campbelloceras – tentative report
• 

  Life restoration of the Cambrian arthropod Canadaspis (left)
  †Canadaspis
  • †Canadaspis perfecta – or unidentified comparable form
• †Canadia
• †Caninia
• †Cardiopteris
• †Carolinites
• †Cavusgnathus
• †Cedaria
• †Chancelloria
• †Chancia (genus)
• †Choia
• †Chondrites
• †Chonetes
• †Cladochonus
• †Cleiothyridina
• †Clonograptus
• †Coenites
• 

  Fossilized shell of the Late Devonian-Permian brachiopod Composita
  †Composita
  • †Composita mira
  • †Composita ovata
  • †Composita parasulcata
  • †Composita plana
  • †Composita subtilita
  • †Composita trinuclea
• †Coosella
• †Coosina
• †Cordaicarpus
• †Cordaites
  • †Cordaites principalis
• Crania
• †Cravenoceras
• †Crepicephalus
• †Cruziana
• 

  Restoration of the Permian synapsid (mammal precursor) Ctenospondylus
  †Ctenospondylus
• †Cybelopsis
• †Cyclopteris
• †Cystodictya
• †Deiracephalus
• Dentalium
• †Diadectes
• †Diagoniella
• †Dictyonema
• 

  Fossil of the Middle Ordovician graptolite Didymograptus
  †Didymograptus
  • †Didymograptus nitidus – or unidentified comparable form
• †Dimeropygiella
• †Diplorrhina
• †Donaldina
• †Dresbachia
• †Echinaria
• †Ectosteorhachis – or unidentified related form
• †Ehmaniella
• †Eldonia
• †Eleutherocentrus
• †Elrathia
• †Elrathina
• †Emeraldella
• †Endoceras
• 

  Life restoration of the Carboniferous-Permian amphibian Eryops
  †Eryops
• †Euptychaspis
• †Fenestella
• †Forteyops
• †Genevievella
• †Girvanella
• †Gnathodus
• †Gogia
• †Goniatites
• †Gunterichthys – type locality for genus
• †Hamptonia
• †Haplophrentis
• †Hazelia
• 

  Life restoration of the Permian Chimaera relative Helicoprion
  †Helicoprion
• †Hematites
• †Hemirhodon
• †Hindia
• †Hintzeia
• †Homagnostus
• †Huronia
• †Hyolithellus
• †Hyolithes
• †Idiognathodus
• †Illaenus
• †Irvingella
• †Jeffersonia
• †Kanoshia
• †Kawina
• †Kingstonia
• †Kirkella
• †Komia
• †Kootenia
• †Lachnostoma
• 

  Life restoration in multiple views of the Cambrian arthropod Leanchoilia
  †Leanchoilia
• †Lejopyge
• †Lepidodendron
  • †Lepidodendron aculeatum
  • †Lepidodendron obovatum
• †Lepidophyllum
• †Lepidostrobus
• †Leptomitus
• Lima
• Limatula
• Lingula
• †Lingulella
• †Llanoaspis
• †Lochriea
• †Lonchocephalus
• †Lyracystis
• †Margaretia
  • †Margaretia dorus
• †Marpolia
• †Matthevia
• 

  Fossilized shell of the Carboniferous-Permian nautiloid cephalopod Metacoceras
  †Metacoceras
• †Meteoraspis
• †Micromitra
• Modiolus – report made of unidentified related form or using admittedly obsolete nomenclature
• †Mollisonia
• †Morania
• †Naraoia
• †Naticopsis
• †Neospirifer
  • †Neospirifer cameratus
  • †Neospirifer kansasensis
  • †Neospirifer triplicatus
• †Neuropteris
  • †Neuropteris gigantea
  • †Neuropteris heterophylla
• †Niobe – tentative report
• †Nisusia
• †Norwoodia
• †Obolus
• †Ogygopsis
• †Olenellus
• †Olenoides
  • †Olenoides nevadensis
  • †Olenoides serratus
• 

  Life restoration of the Carboniferous-Permian synapsid (mammal precursor) Ophiacodon
  †Ophiacodon
  • †Ophiacodon navajovicus
• †Orthis
• †Oryctocephalus
• †Ottoia
  • †Ottoia prolifica
• †Ozarkodina
• †Pagetia
• †Paladin
• Palaeoaplysina
• †Palaeoscolex
• †Pelagiella
• †Pentamerus
• †Peronopsis
  • †Peronopsis interstricta
• †Perspicaris
• †Phillipsia
• †Phyllograptus
• Pinna – report made of unidentified related form or using admittedly obsolete nomenclature
• †Platycrinites
• 

  Life restoration of the Carboniferous-Permian sail-backed amphibian Platyhystrix
  †Platyhystrix – or unidentified comparable form
  • †Platyhystrix rugosus
• †Prodentalium
• †Prohedinia
• †Protopliomerella
• †Protospongia
• †Ptychagnostus
  • †Ptychagnostus atavus
• †Pugnax
• †Punka
• †Quadratia
• †Rayonnoceras
• 

  Fossil of the Early Ordovician-Permian benthic alga Receptaculites
  †Receptaculites
• †Ribeiria
• †Rusophycus
• †Saukiella
• †Scenella
• †Schmalenseeia
• †Schwagerina
• †Scolicia
• †Selkirkia
  • †Selkirkia columbia – or unidentified comparable form
• †Sidneyia
• †Sigillaria
  • †Sigillaria brardii
• 

  Life restoration of the Carboniferous-Permian synapsid (mammal precursor) Sphenacodon
  Sphenacodon
• †Sphenophyllum
  • †Sphenophyllum angustifolium
  • †Sphenophyllum verticillatum
• †Sphenopteris
• †Spinofacia – type locality for genus
• †Spirifer
  • †Spirifer centronatus
  • †Spirifer opimus
• †Spiriferina
• Spirorbis
• †Stenorhachis – tentative report
• 

  Fossil preserved in situ of a Carboniferous tree-like club moss relative with attached Stigmaria rhizome system
  †Stigmaria
• †Syringopora
• †Teichichnus – tentative report
• †Terranovella
• †Tetragraptus
• †Thalassinoides – tentative report
• †Tricrepicephalus
• †Trigonocercella
• †Trinodus
• †Triplagnostus
• †Trocholites
• †Tseajaia
  • †Tseajaia campi – type locality for species
• †Tuzoia
• 

  Life restoration of the Carboniferous amphibian Utaherpeton
  †Utaherpeton – type locality for genus
• †Vauxia
• †Walcottoceras – tentative report
• †Waptia
  • †Waptia fieldensis – or unidentified comparable form
• †Weeksina
• †Wilkingia
• †Wiwaxia
  • †Wiwaxia corrugata
• †Worthenia
• †Xenacanthus – or unidentified related form
• †Yuknessia
• †Zacanthoides
• †Zittelloceras

Mesozoic

Main article: List of the Mesozoic life of Utah

Selected Mesozoic taxa of Utah

• †Abydosaurus – type locality for genus
  • †Abydosaurus mcintoshi – type locality for species
• †Acristavus
  • †Acristavus gagslarsoni
• †Adelolophus – type locality for genus
  • †Adelolophus hutchisoni – type locality for species
• †Adocus
• †Alamosaurus
  • †Alamosaurus sanjuanensis
• †Albanerpeton
  • †Albanerpeton cifellii – type locality for species
  • †Albanerpeton galaktion
  • †Albanerpeton gracilis
  • †Albanerpeton nexuosus
• †Allocrioceras
• 

  Life restoration of the Late Jurassic theropod dinosaur Allosaurus
  †Allosaurus
  • †Allosaurus fragilis
• †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
• 

  A living Amia, or bowfin
  Amia
• †Anaflemingites
• †Anasibirites
  • †Anasibirites angulosus
  • †Anasibirites bastini
  • †Anasibirites hircinus
  • †Anasibirites kingianus
  • †Anasibirites mojsisovicsi
  • †Anasibirites multiformis
  • †Anasibirites tenuistriatus
• †Anchisauripus
• †Anemia
• 

  Mounted fossilized skeleton of the Cretaceous armored dinosaur Animantarx
  †Animantarx – type locality for genus
  • †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
• 

  Illustration of fossilized teeth from the Late Cretaceous tyrannosaur Aublysodon
  †Aublysodon – tentative report
• †Baena
• †Barosaurus
  • †Barosaurus lentus
• †Basilemys
• †Bernissartia
• †Brachauchenius
  • †Brachauchenius lucasi
• †Brachiosaurus
• †Brachyphyllum
• †Brontomerus – type locality for genus
  • †Brontomerus mcintoshi – type locality for species
• †Brontopodus
• 

  Life restoration of a herd of the Late Jurassic sauropod dinosaur Brontosaurus
  †Brontosaurus
  • †Brontosaurus parvus
• †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
  • †Camptosaurus dispar
• †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
• 

  Restoration of the Late Jurassic ceratosaur Ceratosaurus
  †Ceratosaurus
  • †Ceratosaurus nasicornis
• 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
• 

  Life restoration of the face of the Late Cretaceous multituberculate mammal Cimolomys
  †Cimolomys
  • †Cimolomys clarki
  • †Cimolomys milliensis – type locality for species
• Cladophlebis
  • †Cladophlebis constricta
  • †Cladophlebis parva
• †Claraia
• †Coelophysis – tentative report
• †Coelurus
  • †Coelurus fragilis
• †Compsemys
• †Coniophis
• 

  Shell of a Corbula basket clam
  Corbula
• †Cretorectolobus
• †Ctenacodon
• †Cteniogenys
• Cucullaea
• †Cycadeoidea
• Cylichna
• †Dakotamys
  • †Dakotamys malcolmi – type locality for species
• †Dakotasuchus
  • †Dakotasuchus kingi
• †Deinonychus
• †Denazinemys
  • †Denazinemys nodosa
• Dentalium
• 

  Restoration of the Late Cretaceous horned dinosaur Diabloceratops
  †Diabloceratops – type locality for genus
  • †Diabloceratops eatoni – type locality for species
• †Dinehichnus – type locality for genus
• †Dinochelys – type locality for genus
• †Diplodocus
  • †Diplodocus hallorum
  • †Diplodocus longus
• Discinisca – report made of unidentified related form or using admittedly obsolete nomenclature
• †Docodon
• †Dolichorhynchops
  • †Dolichorhynchops tropicensis – type locality for species
• 

  Restoration of the Late Triassic reptile Doswellia
  †Doswellia
• †Dryolestes
• †Dryosaurus
  • †Dryosaurus altus
• †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
• 

  Illustration of a reconstructed skull and restorative portrait of the Late Cretaceous primitive duck-billed dinosaur Eolambia
  †Eolambia – type locality for genus
  • †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
  • †Exogyra acroumbonata
  • †Exogyra levis
• †Fabrosaurus – tentative report
• 

  Fossilized skeleton of the Early Cretaceous therizinossaur Falcarius
  †Falcarius – type locality for genus
  • †Falcarius utahensis – type locality for species
• Ficus
• †Flemingites
• †Gastonia – type locality for genus
  • †Gastonia burgei – type locality for species
• †Geminiraptor
  • †Geminiraptor suarezarum
• †Germanonautilus – tentative report
• †Gervillaria
• 

  Fossilized shell of the Carboniferous-Eocene bivalve Gervillia
  †Gervillia
• Gleichenia
• †Glirodon – type locality for genus
  • †Glirodon grandis – type locality for species
• Globularia – tentative report
• †Glyptops
• †Gondolella
  • †Gondolella planata
• †Goniobasis – tentative report
• †Goniopholis
• †Grallator
• †Gryphaea
• 

  Mounted fossilized skeleton of the Late Cretaceous duck-billed dinosaur Gryposaurus
  †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
  • †Ilex serrata
• 

  Fossilized shell of the Early Jurassic-Late Cretaceous marine bivalve Inoceramus with a human indicating its size
  †Inoceramus
  • †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
• 

  Fossilized shell of the Permian-modern marine bivalve Isognomon
  Isognomon
• †Janumys – type locality for genus
  • †Janumys erebos – type locality for species
  • †Janumys erebros
• †Jugulator
  • †Jugulator amplissimus
• †Kallirhynchia
• †Kamerunoceras
• †Kayentapus
• †Koparion – type locality for genus
  • †Koparion douglassi – type locality for species
• 

  Life restoration of the Late Cretaceous horned dinosaur Kosmoceratops
  †Kosmoceratops – type locality for genus
  • †Kosmoceratops richardsoni – type locality for species
• †Kouphichnium
• †Leidyosuchus
• †Lepidotes
• Lepisosteus
• †Leptalestes
• Lima
• †Lissodus
• †Lonchidion
• Lopha
• Lucina
• 

  Life restoration of the Late Cretaceous tyrannosaur Lythronax
  †Lythronax – type locality for genus
  • †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
  • †Meniscoessus intermedius
• †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
  • †Metoicoceras geslinianum
• 

  Mounted fossilized skeletons of the Early Cretaceous long-necked dinosaur Moabosaurus
  †Moabosaurus – type locality for genus
• Modiolus
• †Monanthesia
• †Myledaphus
  • †Myledaphus bipartitus
• †Myophorella
  • †Myophorella livinigstonensis
  • †Myophorella monatanaensis
  • †Myophorella yellowstonensis
• †Myophoria
• †Mytilus
• †Naomichelys
• 

  Known material diagram of the Late Cretaceous horned dinosaur Nasutoceratops
  †Nasutoceratops – type locality for genus
  • †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
  • †Neocardioceras juddii
• †Nerinea – tentative report
• Neritina
• †Nezpercius
• †Normannites – tentative report
• 

  Mounted fossilized skeleton of the Late Cretaceous Nothronychus
  †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
• 

  Mounted fossilized skeleton of the Late Jurassic herbivorous dinosaur Othnielosaurus
  †Othnielosaurus
  • †Othnielosaurus consors
• †Otozoum
• †Ovaloolithus
  • †Ovaloolithus tenuisus – type locality for species
  • †Ovaloolithus utahensis – type locality for species
• †Owenites
  • †Owenites carpenteri
  • †Owenites koeneni
• †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
• 

  Mounted fossilized skeleton of the Late Cretaceous duck-billed dinosaur Parasaurolophus
  †Parasaurolophus
  • †Parasaurolophus cyrtocristatus
• †Paronychodon – or unidentified comparable form
• †Parotosuchus
• †Peloroplites – type locality for genus
  • †Peloroplites cedrimontanus – type locality for species
• Pholadomya
  • †Pholadomya inaequiplicata
  • †Pholadomya kingi
• †Pinacosuchus – type locality for genus
  • †Pinacosuchus mantiensis – type locality for species
• Pinna
• †Pistia – report made of unidentified related form or using admittedly obsolete nomenclature
• 

  Fossilized shell of the Late Cretaceous ammonoid cephalopod Placenticeras
  †Placenticeras
  • †Placenticeras cumminsi
• †Plagiostoma
• †Planicoxa – type locality for genus
  • †Planicoxa venenica – type locality for species
• †Planolites
• †Pleuronautilus
• Pleurotomaria – tentative report
• Plicatula
• †Poposaurus
  • †Poposaurus gracilis
• †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
  • †Pycnodonte newberryi
• 

  Fossilized skeleton of the Late Triassic phytosaur Redondasaurus
  †Redondasaurus
  • †Redondasaurus gregorii
• †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
• 

  Known material diagram of the Early Jurassic primitive long-necked dinosaur Seitaad
  †Seitaad – type locality for genus
  • †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
  • †Squatirhina americana
• †Stagonolepis
• †Stegopodus – type locality for genus
• 

  Restoration of the Late Jurassic stegosaur Stegosaurus
  †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
  • †Tanycolagreus topwilsoni
• †Tempskya
  • †Tempskya jonesii – type locality for species
  • †Tempskya knowltoni
  • †Tempskya minor
  • †Tempskya superba
  • †Tempskya whiteheadi – type locality for species
• †Tenontosaurus
• 

  Known material diagram of the Late Cretaceous tyrannosaur Teratophoneus
  †Teratophoneus – type locality for genus
  • †Teratophoneus curriei – type locality for species
• Teredolites
• †Tetrasauropus
• †Thalassinoides
• †Therangospodus – type locality for genus
• †Theretairus
• Thracia
• †Torvosaurus
• †Toxolophosaurus – or unidentified comparable form
• †Trachodon
• 

  Mounted fossilized skeleton of the Late Cretaceous horned dinosaur Triceratops
  †Triceratops
• †Triconolestes – type locality for genus
  • †Triconolestes curvicuspis – type locality for species
• †Trigonia
  • †Trigonia americana
  • †Trigonia elegantissima
  • †Trigonia montanaensis
• †Trinacromerum
  • †Trinacromerum bentonianum – tentative report
• †Trisauropodiscus
• Turritella
• †Tyrannosauripus – type locality for genus
• †Ussurites
  • †Ussurites hosei
• †Utahceratops – type locality for genus
  • †Utahceratops gettyi – type locality for species
• 

  Diagram illustrating the Early Cretaceous dromaeosaurid ("raptor") Utahraptor with an anachronistic human to scale
  †Utahraptor – type locality for genus
  • †Utahraptor ostrommaysi – type locality for species
• †Uteodon
  • †Uteodon aphanoecetes
• Valvata
• †Vancleavea
  • †Vancleavea campi
• †Venenosaurus – type locality for genus
  • †Venenosaurus dicrocei – type locality for species
• †Vex
• Viviparus
• †Worthenia
  • †Worthenia windowblindensis – type locality for species
• †Wyomingites
• †Xenoceltites
  • †Xenoceltites cordilleranus
  • †Xenoceltites subevolutus
• 

  Life restoration of the Early Cretaceous dromaeosaurid ("raptor") Yurgovuchia
  †Yurgovuchia – type locality for genus
  • †Yurgovuchia doellingi – type locality for species
• †Zamites
  • †Zamites powelli
  • †Zamites tidwellii – type locality for species

Cenozoic

Main article: List of the Cenozoic life of Utah

Selected Cenozoic taxa of Utah

• Abies
• †Acrocera
• †Agriochoerus
• Alligator
• 

  Fossilized skeleton of the Late Cretaceous-Oligocene Alligator relative Allognathosuchus
  †Allognathosuchus – or unidentified comparable form
• Amia
• Amyda
• †Anosteira
• Anthonomus
• Antilocapra
  • †Antilocapra americana – or unidentified comparable form
• Apalone
• 

  Restoration of an Arctodus, or short-faced bear, with a human to scale
  †Arctodus
  • †Arctodus simus
• †Artemisia
• †Baena
• †Basirepomys
• †Bembidium
• Bison
  • †Bison latifrons – tentative report
• †Bittacus
• †Bootherium
  • †Bootherium bombifrons
• †Boverisuchus
  • †Boverisuchus vorax – type locality for species
• †Brachyhyops
• Brachylagus
  • †Brachylagus idahoensis – or unidentified comparable form
• 

  Life restoration of the Pliocene-Holocene camel Camelops
  †Camelops
  • †Camelops hesternus – or unidentified comparable form
• Camponotus
• Canis
  • †Canis dirus – or unidentified comparable form
  • †Canis latrans – tentative report
  • †Canis lupus
• †Catopsalis
  • †Catopsalis fissidens
• †Champsosaurus
• Chara
• Cheilosia
• †Chipetaia
  • †Chipetaia lamporea – type locality for species
• †Chisternon
• †Chriacus
• †Colodon
• †Compsemys
• †Coniatus
• 

  Life restoration of the Paleocene-Eocene pantodont mammal Coryphodon. Heinrich Harder (1920).
  †Coryphodon
• Crocodylus
  • †Crocodylus acer – type locality for species
  • †Crocodylus affinis
• Culex
• †Cuterebra
• Dicranomyia
• †Dinohippus
• †Diplacodon
• †Diprionomys
• †Duchesnehippus
• †Duchesneodus
• †Echmatemys
• †Ectoconus
• †Elliptio
• 

  Life restoration of a pair of the Eocene uintathere mammal Eobasileus. Charles R. Knight (1890s).
  †Eobasileus
  • †Eobasileus cornutus
• †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
• 

  Fossil of the Eocene bee Euglossopteryx
  †Euglossopteryx – type locality for genus
  • †Euglossopteryx biesmeijeri – type locality for species
• Eutamias
  • †Eutamias minimus
• †Goniacodon
• †Hadrianus
• †Haplolambda – or unidentified comparable form
• †Harpagolestes
• †Helaletes
• †Helodermoides – tentative report
• †Herpetotherium
• †Heteraletes
• †Hoplochelys
• 

  Life restoration of the Eocene-Miocene creodont mammal Hyaenodon
  †Hyaenodon
  • †Hyaenodon vetus – or unidentified comparable form
• Hydrobia – or unidentified comparable form
• †Hylobius
• †Hyopsodus
• †Hypohippus
• †Hypolagus
• †Hyrachyus
• †Hyracodon
• †Hyracotherium
  • †Hyracotherium vasacciense
• †Kimbetohia
• Laccophilus
• †Lambdotherium
• Lemmiscus
  • †Lemmiscus curtatus
• Lepisosteus
• 

  Life restoration of the Eocene-Oligocene even-toed ungulate Leptomeryx
  †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
  • †Mammut americanum
• †Mammuthus
  • †Mammuthus columbi
  • 

    Life restorations of a Mammut americanum, or American mastodon (right), and a Mammuthus primigenius, or wooly mammoth (left)
    †Mammuthus primigenius
• †Megalonyx
  • †Megalonyx jeffersonii
• †Menops
• †Merriamoceros
• †Mesonyx
  • †Mesonyx obtusidens
• †Metaliomys – type locality for genus
• †Metarhinus
• †Metatelmatherium
• 

  Life restoration of the Paleocene-Eocene mammal Miacis
  †Miacis
• †Microsyops
• Microtus
  • †Microtus montanus
• †Miocyon
• Mustela
  • †Mustela erminea – tentative report
  • †Mustela vison
• †Nemotelus
• †Neoplagiaulax
  • †Neoplagiaulax macintyrei
• Neotamias
• Neotoma
• †Notharctus
  • †Notharctus tenebrosus – or unidentified comparable form
• Odocoileus
• Ondatra
• †Oodectes – tentative report
• Ophryastes
• †Oxyacodon
• 

  Fossilized skeleton of the Pliocene-Pleistocene ground sloth Paramylodon
  †Paramylodon
  • †Paramylodon harlani – or unidentified comparable form
• †Paramys
• †Parectypodus
• †Paronychomys
• †Peratherium
• Peromyscus
  • †Peromyscus maniculatus
• Phenacomys
  • †Phenacomys intermedius
• Phyllobius
• †Phyllophaga
• Physa
• Picea
• Pinus
• †Plastomenoides
• Plecia
• †Poabromylus
• †Poebrodon
• †Polemonium – or unidentified comparable form
• 

  Life restoration of the Paleocene-Eocene waterfowl Presbyornis
  †Presbyornis – type locality for genus
• †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
  • †Saniwa ensidens
• †Sargus
• †Sinopa
• †Smilodectes
  • †Smilodectes gracilis
• 

  Life restoration of the Pleistocene-Holocene saber-tooth cat Smilodon
  †Smilodon
  • †Smilodon fatalis – or unidentified comparable form
• Sorex
  • †Sorex palustris
• Spermophilus
  • †Spermophilus armatus – or unidentified comparable form
• †Sphenocoelus
• †Sthenodectes
• †Stygimys
  • †Stygimys kuszmauli
• †Stylemys
• 

  Life restoration of the Eocene taeniodont mammal Stylinodon
  †Stylinodon
• †Taeniolabis
  • †Taeniolabis taoensis
• †Tapocyon
• Taxidea
  • †Taxidea taxus
• Thomomys
  • †Thomomys talpoides
• †Trogosus
• †Tylocephalonyx
• †Uintacyon
• 

  Life restoration of the Eocene mammal Uintatherium
  †Uintatherium
• †Valenia
• †Viverravus
• Viviparus
• Vulpes
  • †Vulpes vulpes
• Zapus

References

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