List of the Cenozoic life of Washington

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

Frustulia rhomboides
Navicula contendens
Test of Elphidium
Hypnites patens moss holotype
A fossilized frond found in Whatcom County from the Eocene tree fern Cyathea inequilateralis
Ginkgo biloba
Klondike Mountain Formation
Ypresian, Republic
Metasequoia occidentalis branchlet
Abies milleri twig and foliage
Pseudolarix wehrii wing seed
Fossilized leaf found near Spokane ; the holotype specimen of the Oligocene - Miocene maple tree Acer chaneyi
Fossilized leaf found in Republic from the Eocene Alder species Alnus parvifolia
Fossilized leaf found in Republic from the Eocene to birch species Betula leopoldae
Fossilized leaf found in Republic from the Eocene katsura species Cercidiphyllum obtritum
Fossilized leaf found in Republic from the Eocene sweetfern species Comptonia columbiana
Diospyros oregoniana
Eucommia montana fruit
Fagopsis undulata
Klondike Mountain Formation
Ypresian, Republic
Fossilized calyx found in Republic from the Eocene mallow species Florissantia quilchenensis
Hydrangea knowltoni
A living Koelreuteria tree
Langeria magnifica
Klondike Mountain Formation
Ypresian Republic
Liquidambar changii
Yakima Canyon Flora
Miocene Yakima Canyon
Macginitiea gracilis
Klondike Mountain Formation
Republic
Fossilized leaf found in Ferry County belonging to the Eocene golden-club Orontium wolfei
Palaeocarpinus barksdaleae samaras
Photinia pagae leaf
Prunus cathybrownae flower
† Quercus hiholensis acorn in matrix
Eocene Republica hickeyi leaf found in Republic Washington
Fossilized compound leaf from an Eocene sumac Rhus hybrid
Fossilized fronds from Sabalites campbelli
Fossilized leaf of the Eocene sassafras Sassafras hesperia
Miocene Shirleya grahamae fruit
Tetracentron hopkinsii ,
Klondike Mountain Formation
Republic
Tilia johnsoni ,
Klondike Mountain Formation
Republic
Tsukada davidiifolia ,
Klondike Mountain Formation
Republic
Ulmus chuchuanus , Ypresian Klondike Mountain Formation
A living Caryophyllia solitary coral
A living Dendrophyllia cup coral
A living Eusmilia stony coral
Hemithiris psittacea
living specimen
Fossilized shell of the whelk sea snail Ancistrolepis
Shell of an Argobuccinum triton sea snail
Aturia angustata
Lincoln Creek Formation
Oligocene, WA
A modern shell of Chlamys islandica , or Iceland scallop
A living Fusinus sea snail
Shell of a Galeodea helmet snail
Fossilized shell of a Gemmula sea snail , or gem turrid
A living Lepidochitona chiton
Fossilized shell found in Vader; the hypotype specimen of the Eocene miter snail Mitra washingtoniana
Multiple views of a fossilized shell belonging to a Natica moon snail
Shell of a Nucella lamellosa murex snail
Five modern Ostrea lurida , or Olympic oysters
Shell of the whelk sea snail Siphonalia
Shell of a Spisula , or surf clam
Fossilized shells of the Late Jurassic-modern tower snail Turritella
Illustration of an Aegialia dung beetle
Fossilized wing and holotype specimen of the Eocene lacewing Ainigmapsychops
Fossilized wing found in Republic; the holotype specimen of the Eocene lacewing Allorapisma
Shell (left, internal view) and calcified basis (right) of a modern Balanus crenatus acorn barnacle
A living Bembidion ground beetle
A fossilized pincer found in Clallam County belonging to the Oligocene mud shrimp Callianopsis clallamensis
Fossilized wing found in Republic; the holotype specimen of the Eocene scorpionfly Cimbrophlebia brooksi
Dinokanaga andersoni
Klondike Mountain Formation
Ypresian, Republic
Dysagrion pruettae
Klondike Mountain Formation
Ypresian, Republic
A living Elaphrus ground beetle
Fossilized wing found in Republic; the holotype specimen of the Eocene scorpionfly Eorpa elverumi
Metanephrocerus belgardeae
Klondike Mountain Formation
Ypresian, Republic
Mursia marcusana
Blakeley Formation
Oligocene, King County
Myrmeciites species
Klondike Mountain Formation
Ypresian, Republic
Fossilized wing found in Ferry County; the holotype specimen of the Eocene lacewing Nymphes georgei
Okanagrion threadgillae
Eocene giant lacewing Palaeopsychops marringerae wing with color-patterning
A living Phaedon armoraciae leaf beetle
Fossilized wing found in Republic; the holotype specimen of the Eocene giant lacewing Polystoechotites barksdalae
Propalosoma gutierrezae holotype queen
Ypresian Klondike Mountain Formation
Republic
Fossilized carapace of the Paleogene-modern crab Ranina
Ypshna brownleei
Fossilized skeleton found in Republic belonging to the Eocene-Oligocene sucker fish Amyzon aggregatum
Eosalmo driftwoodensis
Klondike Mountain Formation
Ypresian Republic
Libotonius pearsoni
klondike Mountain Formation
Ypresian Republic
Tonsala hildegardae
Pysht Formation , Oligocene
Acherontemys heckmani holotype
A living Thamnophis , or garter snake
Fossilized skeleton of the Miocene seal Allodesmus
Restoration of two of the Miocene-Pliocene bone-crushing dog genus Borophagus preying on a camel . Jay Matternes (1964).
Life restoration of the Pliocene-Holocene camel Camelops
Panel-Fossilized skeleton of the Pleistocene dwarf pronghorn Capromeryx
Fossilized skull of the Oligocene-Miocene bone-crushing dog Cormocyon
Restoration of the Miocene palaeomerycid Cranioceras , a relative of modern deer, with anachronistic human to scale
Life restoration of the Oligocene-Miocene herbivorous marine mammal Desmostylus
Fossilized skull of the Oligocene-Miocene oreodont mammal Eporeodon
Fossilized skeleton of the Miocene-Pliocene coyote -like canine Eucyon
Fossilized lower jaw of the Miocene-Pleistocene llama relative Hemiauchenia
Life restoration of a herd of the Miocene-Pleistocene horse Hipparion . Heinrich Harder (1920).
A living Lynx
Life restorations of a Mammut americanum , or American mastodon (right), and a Mammuthus primigenius , or wooly mammoth (left)
A living Neotoma , or pack rat
Olympicetus thalassodon
Fossilized skeleton of the Pliocene-Pleistocene ground sloth Paramylodon
A living Peromyscus , or deer mouse
Restoration of a herd of alarmed Miocene-Pleistocene peccaries of the genus Platygonus . Charles R. Knight (1922).
Life restoration of the Miocene oreodont Promerycochoerus .
Robert Bruce Horsfall (1913).
A living Sorex , or long-tailed shrew
Restoration of the Miocene-Pliocene rhinoceros Teleoceras