# 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
### 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
* †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
* †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
### 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
* 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
* †Scalamagnus
** †Scalamagnus tropicensis – type locality for species
* †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
### 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 richardsonii – tentative report
* †Nemotelus
* Neogale
** †Neogale vison
* †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 mirus †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