List of the Cenozoic life of Wyoming

This list of the Cenozoic life of Wyoming contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Wyoming and are between 66 million and 10,000 years of age.

A living Accipiter gentilis , or northern goshawk
Living Acrostichum , or leather ferns
Fossilized shell of the Early Cretaceous-Oligocene turtle Adocus
Life restoration of the Miocene camel Aepycamelus , or the long-necked camel. Heinrich Harder (1920).
Life restoration of the Eocene-Oligocene even-toed ungulate Agriochoerus
Restoration of the Miocene deer relative Aletomeryx
Fossilized skeleton of the Late Cretaceous-Oligocene Alligator relative Allognathosuchus
Fossilized needles of an Amentotaxus , or catkin-yew
Assemblage of fossilized skeletons of the softshell turtle Amyda
A living Spatula clypeata , or northern shoveler
Fossilized shell of the Eocene-Oligocene turtle Anosteira
A living Antilocapra , or pronghorn
A living Aquila chrysaetos , or golden eagle
Life restoration of the Eocene-Oligocene entelodont mammal Archaeotherium
Restoration of an Arctodus , or short-faced bear, with a human to scale
An Asterotrygon maloneyi stingray
Life restoration of the Paleocene-Eocene pantodont mammal Barylambda
Restorative model of the Eocene shrew-like mammal Batodonoides
A living Bison bison
Fossilized skeleton of the eocene-?Miocene boa snake Boavus
Restorative portrait of the Miocene oreodont mammal Brachycrus
A living Branta canadensis , or Canada goose
Mounted fossilized skeleton of the Miocene-modern bird of prey Buteogallus
Life restoration of the Eocene-Oligocene cow-sized rhinoceros Subhyracodon . Charles R. Knight (1890s).
A living Calidris melanotos , or pectoral sandpiper
Skeletons look identical
Modern mounted skeleton of Canis lupus , the grey wolf, to scale with a fossilized skeleton of the Pleistocene wolf Canis dirus , or dire wolf
A living Caracara plancus , or southern crested caracara
A Cardiospermum coloradensis leaf
Life restoration of the Paleocene primate relative Carpolestes simpsoni
Living Cedrela trees
Foliage and fruit of a living Celastrus , or staff vine
Life restoration of the Paleocene-Eocene crocodilian Ceratosuchus
A living Cercopis froghopper
Life restoration of the Late Cretaceous-Eocene choristoderan reptile Champsosaurus
† Chaneya tenuis
Fossilized skeleton of the Eocene turtle Chisternon
A living Chordeiles minor , or common nighthawk
A living Cinnamomum , or cinnamon tree
Flowers of a living Cladrastis , or yellowwood
Fruit and foliage of a living Cocculus , or moonseed
Illustration of fossilized vertebrae of the Late Cretaceous-Eocene snake Coniophis . Othniel Charles Marsh (1892).
Fossilized skull of the Oligocene-Miocene bone-crushing dog Cormocyon
Life restoration of the Paleocene-Eocene pantodont mammal Coryphodon . Heinrich Harder (1920).
Fossilized skull of the Eocene crocodilian "Crocodylus" affinis
Underside of a fossilized cranium of the Oligocene-Miocene bone-crushing dog Cynarctoides
Life restoration of the Miocene bear-dog Daphoenodon
A living Dasyatis stingray
A living Dendragapus obscurus , or dusky grouse
Restoration of two of the Eocene even-toed ungulate Diacodexis being hunted by a primitive whale
Restoration of the Oligocene-Miocene hornless rhinoceros Diceratherium . Robert Bruce Horsfall (1913).
Life restoration of the Eocene-Miocene false saber-toothed cat Dinictis . Robert Bruce Horsfall (1913).
Fossilized skeleton of the Early Cretaceous-Eocene bony fish Diplomystus preserved in the act of swallowing another fish
Fossilized samara of the Eocene-modern Dipteronia tree
A living Dolichopus fly
Illustration of a modern Dryopteris , or wood fern
Fossilized shell of the Eocene turtle Echmatemys
Fossilized skull of the Paleocene-Eocene mammal Ectocion
Taxidermied male Ectopistes migratorius , or passenger pigeon
Life restoration of the Eocene-Oligocene mammal Entelodon . Charles R. Knight .
Life restoration of a pair of the Eocene uintathere mammal Eobasileus . Charles R. Knight (1890s).
Life restoration of the Eocene horse Eohippus . Heinrich Harder (1920).
Life restoration of the Eocene brontothere mammal Eotitanops
Underside of the fossilized cranium of the Eocene horse Epihippus
Erythrina speciosa inflorescences , Brazil
Branches and fruits of a living Eugenia
Fossilized mandible of the Eocene-Oligocene false saber-toothed cat Eusmilus
A living Falco mexicanus , or prairie falcon
Fossilized skeleton of the Eocene bird Fluvioviridavis
Illustrations of the flowers and foliage of a living Fraxinus , or ash tree, with insets further detailing its anatomy
Fossilized skeleton of the Eocene bird Gallinuloides
Restored foliage of the Late Cretaceous-Miocene ginkgo tree Ginkgo adiantoides
Fossilized foliage of the Early Cretaceous-Pleistocene conifer Glyptostrobus europaeus
A living Gulo gulo , or wolverine
Restoration of the Paleocene-Eocene mesonychian mammal Hapalodectes
Fossilized skull of the mesonychian mammal Harpagolestes
Fossilized skull of the Oligocene lizard Helodermoides
Fossilized lower jaw of the Miocene-Pleistocene llama relative Hemiauchenia
Life restoration of the Eocene-Miocene mammal Herpetotherium
Life restoration of the Eocene-Oligocene false saber-toothed cat Hoplophoneus . Robert Bruce Horsfall (1913).
Life restoration of the Eocene-Miocene creodont mammal Hyaenodon
A living Hydrobius water scavenger beetle
Life restoration of the Eocene odd-toed ungulate Hyopsodus
Life restoration of the Miocene horse Hypohippus . Heinrich Harder (1920).
Life restoration of the Eocene-Oligocene odd-toed ungulate Hyracodon . Charles R. Knight (1896).
Fossilized skeleton of the Eocene bat Icaronycteris
Mounted fossilized skeleton of the Eocene-Oligocene rodent Ischyromys
Fossilized skeleton of the Eocene wading bird Juncitarsus
Fossilized skeleton of the Eocene bony fish Knightia
A living Lagopus , or ptarmigan
Living Laurus , or laurel trees
Illustration of a living Lepisosteus , or gar
Restoration of the Oligocene-Miocene oreodont mammal Leptauchenia
Life restoration of the Eocene-Oligocene even-toed ungulate Leptomeryx
Top view of a fossilized skull of the Eocene creodont mammal Limnocyon
Fossilized skeleton of the Eocene freshwater frigatebird Limnofregata
A Lithohypoderma ascarides larva
Life restoration of the Paleocene-Eocene bird Lithornis
A living Lynx lynx , or Eurasian lynx
Close-up view of a Magnolia flower
Painting of a family of mammoths walking
Life restoration of a herd of Mammuthus columbi , or Columbian mammoths. The extent of the fur depicted is hypothetical. Charles R. Knight (1909).
Restorative portrait, reconstructed skull, and actual fossil of the Miocene weasel relative Megalictis
Life restoration of the Eocene mammal Meniscotherium . Robert Bruce Horsfall (1913).
Life restoration of the Miocene rhinoceros Menoceras
Life restoration of the Miocene three-toed horse Merychippus
Mounted fossilized skeleton of the Miocene pronghorn Merycodus
Life restoration of the Eocene-Oligocene horse Mesohippus . Heinrich Harder (c. 1920).
Life restoration of the Eocene pangolin relative Metacheiromys
Life restoration of the Paleocene-Eocene mammal Miacis
Illustration of the shell in multiple views of a living Microphysula land snail
A living Microtus pennsylvanicus , or meadow vole
Life restoration of the Eocene-Oligocene oreodont mammal Miniochoerus
Fossilized skeleton of the Eocene perch relative Mioplosus
Restoration of the Pliocene-Pleistocene Miracinonyx , or American cheetah
Fruit of a living Myrica , or firetree
A living Nelumbo lotus
Mounted fossilized skeleton of the Miocene Neophrontops
Mounted fossilized skeleton of the Eocene primate Notharctus tenebrosus
A taxidermied Numenius borealis , or Eskimo curlew
A living Ochotona princeps , or American pika
Restoration of the Eocene bat Onychonycteris
A living Oreamnos , or mountain goat
Mounted fossilized skeleton of the Eocene horse Orohippus
Living Osmunda ferns
A living Ovis canadensis , or bighorn sheep
Life restoration of a pair of the Oligocene-Miocene camel Oxydactylus . Robert Bruce Horsfall (1913).
Fossilized mandibles of the Paleocene-Eocene mesonychian mammal Pachyaena
Restoration of the Oligocene rabbit relative Palaeolagus
Restorative model and fossilized skull of the Eocene brontothere mammal Palaeosyops
A living Panthera leo , or lion
Life restoration the Eocene-Oligocene camel Paratylopus (upper right)
Life restoration of the Eocene creodont mammal Patriofelis . Charles R. Knight (1896).
Fossilized mandible of the Eocene-Miocene mammal Peratherium
A living Peromyscus , or deer mouse
Life restoration of the Paleocene-Eocene ungulate Phenacodus . Charles R. Knight (1898).
Illustration of a fossilized skull in multiple views of the Oligocene-Miocene bone-crushing dog Phlaocyon
A living Phyllobius weevil
A living Pinus , or pine tree
A living Pipilo chlorurus , or green-tailed towhee
Illustration of a branch with nuts from a Planera , or water elm tree
Leaves and fruit of a living Platanus , or plane tree
Life restoration of the Paleocene-Eocene primate Plesiadapis
Life restoration of the Eocene-Oligocene camel Poebrotherium
Montage of photographs in spring (top left), summer (top right), autumn (bottom left), and winter (bottom right) of Populus , or poplar tree
Life restoration of the Paleocene-Eocene waterfowl Presbyornis
Restoration of the Miocene hippopotamus -like oreodont Promerycochoerus both onshore and in the water. Robert Bruce Horsfall (1913).
Life restoration of a female (left) and male of the Oligocene-Miocene even-toed ungulate Protoceras . Charles R. Knight (1896).
Protorohippus
Protylopus petersoni skull
Illustration of a fossilized skull of the Eocene camel Protylopus
Restoration of the Miocene cat Pseudaelurus
Fossilized skeleton of the Eocene protoceratid mammal Pseudoprotoceras
Life restoration of the Paleocene taeniodont mammal Psittacotherium multifragum
Illustration of a fossilized skull of the Paleocene multituberculate mammal Ptilodus
A living Quercus , or oak tree
A living Quiscalus , or grackle
Life restoration of the Miocene-Pliocene pronghorn Ramoceros and Cosoryx . Robert Bruce Horsfall (1913).
A Rhus nigricans leaf
Flowers of a living Robinia
Living Sabal , or palmettos
A living Salix , or willow
Fossilized skeleton of the Eocene monitor lizard Saniwa
Foliage of a living Schoepfia
Life restoration of two species of the Oligocene oreodont mammal genus Sespia
Fossilized skeleton of the Eocene-Oligocene creodont mammal Sinopa
Mounted fossilized skeleton of the Eocene primate Smilodectes
Life restoration of the Eocene brontothere mammal Sphenocoelus
Life restoration of the Oligocene-Miocene camel Stenomylus
Mounted fossilized skeleton of the Eocene-Oligocene tortoise Stylemys
Life restoration of the Miocene protoceratid mammal Syndyoceras
Restoration of the Paleocene multituberculate mammal Taeniolabis
Life restoration of the Eocene carnivoran relative Tapocyon
Fossilized mandible of the Eocene primate Teilhardina
A modern uprooted Thelypteris , or maiden fern
A living member of Tilia , the genus including the lindens and basswoods
Life restoration of the Paleocene pantodont mammal Titanoides
Titanomyrma lubei with a rufous hummingbird for scale
Life restoration of the Eocene creodont mammal Tritemnodon
A living Tympanuchus phasianellus , or sharp-tailed grouse
Life restoration of the Eocene mammal Uintatherium
A living Ursus arctos , or brown bear
Leaves and fruit of a living Vitis , or grapevine
Mounted fossilized skeleton of the Eocene mammal Vulpavus
A living Vulpes vulpes , or red fox
Living Woodwardia ferns
Life restoration of the Miocene bear dog Ysengrinia
A living Zonotrichia albicollis , or white-throated sparrow