List of the Cenozoic life of Oregon

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

A

• Abies
  • †Abies chaneyi
  • †Abies sonomensis

• 

  Shell of an Acamptogenotia sea snail

  †Acamptogenotia
  • †Acamptogenotia nodulosa
  • †Acamptogenotia tessellata
• Acanthocardia
  • †Acanthocardia brewerii
• Acer
  • †Acer ashwillii
  • †Acer cranei
  • †Acer glabroides
  • †Acer kluckingii
  • †Acer manchesteri
  • †Acer oligomedianum
  • †Acer osmonti
  • †Acer osmontii
• †Acericecis
  • †Acericecis chaneyi – type locality for species
• †Achaenodon
  • †Achaenodon fremdi – type locality for species
• †Achlyoscapter
  • †Achlyoscapter longirostris
• Acila
  • †Acila conradi
  • †Acila decisa
  • †Acila gettysburgensis
  • †Acila nehalemensis
  • †Acila shumardi
  • †Acila trilineata
• Acmaea
  • †Acmaea vokesi

• 

  Mounted fossilized skeleton of the Miocene horse Acritohippus

  †Acritohippus
  • †Acritohippus isonesus
• Acteon
  • †Acteon chehalisensis
  • †Acteon parvum
• †Actinidia
  • †Actinidia oregonensis
• †Acutostrea
  • †Acutostrea idriaensis
• †Adeloblarina
  • †Adeloblarina berklandi
• Admete
  • †Admete umbilicata
• Aechmophorus
  • †Aechmophorus occidentalis
• †Aesculus

• 

  Life restoration of the Oligocene baleen whale Aetiocetus

  †Aetiocetus – type locality for genus
  • †Aetiocetus cotylalveus – type locality for species
  • †Aetiocetus weltoni – type locality for species
• Aforia
  • †Aforia campbelli
  • †Aforia clallamensis – or unidentified comparable form
• †Agasoma
  • †Agasoma gravidum
• Agelaius – tentative report

• 

  Life restoration of the Eocene-Oligocene even-toed ungulate Agriochoerus

  †Agriochoerus
  • †Agriochoerus guyotianus
• Aix
  • †Aix sponsa
• Alangium
  • †Alangium eydei
  • †Alangium rotundicarpum
  • †Alangium thomae
• †Allocyon
  • †Allocyon loganensis
• †Allomys
  • †Allomys simplicidens
• †Alluvisorex
  • †Alluvisorex arcadentes
• Alnus
  • †Alnus carpinoides
  • †Alnus heterodonta
  • †Alnus newberryi
• †Alwoodia
  • †Alwoodia magna
• Amaea
  • †Amaea dickersoni – or unidentified related form

• 

  Life restoration of the Miocene elephant relative Amebelodon. Margret Flinsch (1932).

  †Amebelodon
• Amelanchier
  • †Amelanchier covea
  • †Amelanchier grayi
• †Ameranella
  • †Ameranella terrysmithae – type locality for species
• Ammospermophilus
  • †Ammospermophilus junturensis
• Ampelocissus
  • †Ampelocissus auriforma
  • †Ampelocissus rooseae
  • †Ampelocissus scottii

• 

  Life restoration of the Miocene-Pliocene beardog Amphicyon

  †Amphicyon
  • †Amphicyon frendens
  • †Amphicyon galushai – or unidentified comparable form
• Amphissa
  • †Amphissa corrugata
• †Ampullina
  • †Ampullina oregonensis
• †Anabernicula
• Anadara
  • †Anadara devincta
• †Anamirta
  • †Anamirta leiocarpa
• Anas
  • †Anas acuta
  • †Anas americana
  • †Anas boschas
  • †Anas carolinensis

  • 

    A living Spatula clypeata, or northern shoveler

    †Anas clypeata
  • †Anas cyanoptera
  • †Anas discors
  • †Anas platyrhynchos
• Ancilla
  • †Ancilla vernisa – type locality for species
• †Anechinocardium
  • †Anechinocardium lorenzanum
  • †Anechinocardium weaveri
• †Ankistrosperma
  • †Ankistrosperma spitzerae
• Anona
  • †Anona preretriculata
• †Anonaspermum
  • †Anonaspermum bonesii
  • †Anonaspermum pulchrum
  • †Anonaspermum rotundum
• †Anonymocarpa
  • †Anonymocarpa ovoidea
• †Anorthoscutum
  • †Anorthoscutum oregonensis
• Anser
  • †Anser albifrons
  • †Anser condoni – type locality for species
• †Antecalomys
  • †Antecalomys valensis
• Antillophos
  • †Antillophos dumbleana
• Antilocapra
  • †Antilocapra americana – or unidentified comparable form
• †Aperiploma
  • †Aperiploma bainbridgensis
• Aphananthe
  • †Aphananthe maii
• †Aphelops
  • †Aphelops megalodus
• Aquila
  • †Aquila chrysaetos
  • †Aquila pliogryps – type locality for species
  • †Aquila sodalis – type locality for species
• Arbacia
  • †Arbacia abiquaensis – type locality for species
• †Archaeocyon
  • †Archaeocyon pavidus
• †Archaeohippus
  • †Archaeohippus ultimus
• †Archaeolagus
  • †Archaeolagus macrocephalus – or unidentified comparable form
• †Archaeotherium
• Architectonica
  • †Architectonica blanda
• Archoplites[1]
  • †Archoplites langrellorum – type locality for species[1]

• 

  Restoration of an Arctodus, or short-faced bear, with a human to scale

  †Arctodus
• †Arctomyoides
  • †Arctomyoides oregonensis
• Ardea
  • †Ardea herodias
  • †Ardea paloccidentalis – type locality for species
• Argobuccinum
  • †Argobuccinum cammani
  • †Argobuccinum coosense
  • †Argobuccinum jeffersonense
  • †Argobuccinum oregonense
• †Ascosphaera
  • †Ascosphaera eocenis
• †Asterocarpinus
  • †Asterocarpinus chaneyi
  • †Asterocarpinus perplexans
• Astraea
  • †Astraea inequalis
• Astreopora
  • †Astreopora occidentalis – type locality for species
• Astropecten
• †Atriaecarpum
  • †Atriaecarpum clarnense

• 

  Fossilized shell of the Paleocene-Miocene nautiloid cephalopod Aturia

  †Aturia
  • †Aturia angustata
  • †Aturia grandior – or unidentified comparable form
• †Aucuba
  • †Aucuba smileyi
• †Axinosperma
  • †Axinosperma agnostum
• Aythya
  • †Aythya marila

B

• Balaena
• Balaenoptera

  • 

    Illustration of a living Balaenoptera acutorostrata, or common minke whale

    †Balaenoptera acutorostrata – or unidentified comparable form
• Balanophyllia
  • †Balanophyllia elegans
• Balanus
• Balcis
• †Barbouromeryx
• Bartramia
  • †Bartramia umatilla – type locality for species
• †Basirepomys
  • †Basirepomys pliocenicus – or unidentified comparable form
  • †Basirepomys romensis – type locality for species

• 

  Shell of a Bathybembix sea snail

  Bathybembix
  • †Bathybembix columbiana
  • †Bathybembix nitor – type locality for species
• Bathytoma
  • †Bathytoma gabbiana
• †Beckerosperma
  • †Beckerosperma ovalicarpa
• Bela
  • †Bela tabulata
• Betula
  • †Betula angustifolia
• Bittium
  • †Bittium eschrichti
• †Bonellitia
  • †Bonellitia paucivaricata
  • †Bonellitia smithwickensis – type locality for species
  • †Bonellitia tumida – type locality for species
• †Bonesia
  • †Bonesia spatulata
• Boreotrophon
  • †Boreotrophon gracilis
  • †Boreotrophon stuarti

• 

  Restoration of two of the Miocene-Pliocene bone-crushing dog genus Borophagus preying on a camel. Jay Matternes (1964).

  †Borophagus
  • †Borophagus pugnator
  • †Borophagus secundus – or unidentified comparable form
• Botaurus
  • †Botaurus lentiginosus
• †Bouromeryx
  • †Bouromeryx americanus – or unidentified comparable form
  • †Bouromeryx submilleri
• Brachidontes
  • †Brachidontes cowlitzensis
• Branta
  • †Branta bernicla
  • †Branta canadensis
  • †Branta hypsibata – tentative report
  • †Branta hypsibatus
  • †Branta propinqua – type locality for species
• †Bruclarkia
  • †Bruclarkia columbiana
  • †Bruclarkia columbianum
  • †Bruclarkia oregonensis
  • †Bruclarkia vokesi
• Bubo

  • 

    A living Bubo virginianus, or great horned owl

    †Bubo virginianus
• Buccinum
  • †Buccinum strigillatum
• Bullia
  • †Bullia bogachielia
• †Bumelia – tentative report
  • †Bumelia? subangularis
• †Bursericarpum
  • †Bursericarpum oregonense

C

• Cadulus
• Calliostoma
  • †Calliostoma cammani
  • †Calliostoma costatum
• Callista
  • †Callista conradiana

• 

  A living Callorhinus ursinus, or northern fur seal

  Callorhinus – tentative report
• ] †Calocedrus
  • †Calocedrus schornii
• †Calycocarpum
  • †Calycocarpum crassicrustae
• Calyptraea
  • †Calyptraea diegoana
  • †Calyptraea fastigiata
  • †Calyptraea inornata
  • †Calyptraea sookensis
• †Camelops
  • †Camelops hesternus
• Cancellaria
  • †Cancellaria oregonensis
  • †Cancellaria siletzensis
• Canis

  • 

    Modern mounted skeleton of Canis lupus, the grey wolf, to scale with a fossilized skeleton of the Pleistocene wolf Canis dirus, or dire wolf

    †Canis dirus – or unidentified comparable form
  • †Canis edwardii
  • †Canis latrans
  • †Canis lupus – or unidentified comparable form
• Cardiomya
  • †Cardiomya anaticepsella – type locality for species
  • †Cardiomya pavascotti
• †Carpocyon
• †Carpolithus
  • †Carpolithus bellisperma

• 

  A living Carya, or hickory tree

  Carya
• Caryophyllia
  • †Caryophyllia oregonensis – type locality for species
• Castanea
  • †Castanea basidentata
• Castanopsis
  • †Castanopsis crepetii
  • †Castanopsis longifolius
• Castor
• †Catalpa
• Cedrela
  • †Cedrela merrillii
• †Cedrelospermum
  • †Cedrelospermum lineatum
• Celleporina
• Celtis
  • †Celtis burnhamae
• †Centrocercus
  • †Centrocercus urophasianus
• Cercidiphyllum
  • †Cercidiphyllum crenatum

• 

  Flowers of a living Cercis or redbud tree

  Cercis
  • †Cercis maurerae
• Cerithiopsis
  • †Cerithiopsis preussi – or unidentified comparable form
• †Chandlera
  • †Chandlera lacunosa
• †Charitonetta
  • †Charitonetta albeola
• Chen
  • †Chen hyperborea
  • †Chen rossii

• 

  Life restoration of the Pleistocene-Holocene Chendytes, or Law's diving-goose

  †Chendytes
• Chione
  • †Chione ensifera
  • †Chione securis
• Chlidonias
  • †Chlidonias nigra
• Chlorostoma
  • †Chlorostoma pacificum
• †Choerodon
  • †Choerodon caninus
• †Chrysodomus
  • †Chrysodomus bairdi
  • †Chrysodomus imperialis
  • †Chrysodomus nodiferus
  • †Chrysodomus phoenicus
  • †Chrysodomus tabulatus
• Ciliatocardium
  • †Ciliatocardium coosense
• †Cinnamomophyllum
  • †Cinnamomophyllum bendirei
• Circus
  • †Circus eyaneus
• Cladrastis
  • †Cladrastis oregonensis
• Clangula

  • 

    A living Clangula hyemalis, or long-tailed duck

    †Clangula hyemalis
• Cleyera
  • †Cleyera grotei
• Clinocardium
  • †Clinocardium meekianum
  • †Clinocardium nuttallii
• †Clivuloturris
  • †Clivuloturris levis – or unidentified comparable form
• Cochliolepis – tentative report
  • †Cochliolepis schoonerensis
• Colaptes
  • †Colaptes cafer
• †Colodon
• Columbella
  • †Columbella gausapata

• 

  Shells in differing orientations of Colus whelk sea snails

  Colus – tentative report
  • †Colus precursor
• Colymbus
  • †Colymbus holbellii
  • †Colymbus nigricollis
  • †Colymbus oligocaenus – type locality for species
  • †Colymbus parvus
• †Comicilabium
  • †Comicilabium atkinsii
• Comitas
  • †Comitas monile
  • †Comitas oregonensis
  • †Comitas spencerensis
• †Comminicarpa
  • †Comminicarpa friisae
• Comptonia
  • †Comptonia columbiana
• †Conchocele
  • †Conchocele bathyaulax
  • †Conchocele bisecta
  • †Conchocele taylori
• Conomitra
  • †Conomitra vernoniana – type locality for species

• 

  Fossilized shell of a Conus cone snail

  Conus
  • †Conus armentrouti – type locality for species
  • †Conus weltoni – type locality for species
• †Copemys
  • †Copemys barstowensis
  • †Copemys esmeraldensis
  • †Copemys pagei
• †Cophocetus – type locality for genus
  • †Cophocetus oregonensis – type locality for species
• Corbula
  • †Corbula dickersoni
• †Cormocyon
  • †Cormocyon copei
• Cornus
  • †Cornus clarnensis
• †Cornwallius
  • †Cornwallius sookensis
• Corvus
  • †Corvus annectens – type locality for species
  • †Corvus corax
• †Coryloides
  • †Coryloides hancockii

• 

  Fossilized fruit of a Craigia plant

  Craigia
  • †Craigia oregonensis
• Crataegus
  • †Crataegus merriamii
  • †Crataegus newberryi
• Crenella
  • †Crenella porterensis – or unidentified comparable form
• Crepidula
  • †Crepidula adunca
  • †Crepidula grandis – or unidentified comparable form
  • †Crepidula praerupta
  • †Crepidula princeps
  • †Crepidula ungana
• †Cruciptera
  • †Cruciptera simsonii
• †Crusafontina
  • †Crusafontina minima
• Cryptomya
  • †Cryptomya californica
• Cryptonatica
  • †Cryptonatica affinis
  • †Cryptonatica oregonensis
  • †Cryptonatica pittsburgensis

• 

  A taxidermied Cryptotis , or small-eared shrew

  Cryptotis
  • †Cryptotis adamsi
• †Cuneisemen
  • †Cuneisemen truncatum
• †Cunninghamia
  • †Cunninghamia chaneyi
• †Cupidinimus
  • †Cupidinimus magnus
• †Curvitinospora
  • †Curvitinospora formanii
• Cyclocardia
  • †Cyclocardia hannibali – or unidentified comparable form
  • †Cyclocardia moniligena
  • †Cyclocardia subtenta
  • †Cyclocardia ventricosa
• †Cyclotella
  • †Cyclotella jonesii – type locality for species
• Cygnus
  • †Cygnus paloregonus
• Cymatium
  • †Cymatium pacificum
• †Cynarctoides
  • †Cynarctoides lemur
  • †Cynarctoides luskensis – or unidentified comparable form

• 

  Fossilized cranium of the Miocene bear-dog Cynelos

  †Cynelos
  • †Cynelos sinapius
• †Cynorca
• †Cyperacites

D

• †Daeodon
• Dafila
  • †Dafila acuta
• †Daphoenodon
  • †Daphoenodon robustum
• †Daphoenus
  • †Daphoenus socialis
• †Dasmia
  • †Dasmia americana – type locality for species

• 

  Mounted fossilized skeleton of the Eocene pseudo-toothed bird Dasornis

  †Dasornis – or unidentified related form
• †Davisicarpum
  • †Davisicarpum limacioides
• Decodon
  • †Decodon brownii
• Delectopecten
  • †Delectopecten peckhami
• Dendragapus – type locality for genus
  • †Dendragapus gillii – type locality for species
• †Dendrogapus
  • †Dendrogapus lucasi
  • †Dendrogapus nanus
• Dentalium
  • †Dentalium laneensis
  • †Dentalium pseudonyma
  • †Dentalium rectius
  • †Dentalium stentor
• †Dentisemen
  • †Dentisemen parvum
• †Desmatippus
  • †Desmatippus avus
• †Desmatochoerus
  • †Desmatochoerus leidyi
• †Desmatolagus
• †Desmatophoca
  • †Desmatophoca oregonensis
• †Desmocyon
  • †Desmocyon thomsoni

• 

  Life restoration of the Oligocene-Miocene herbivorous marine mammal Desmostylus

  †Desmostylus
  • †Desmostylus hesperus – type locality for species
• †Deviacer
  • †Deviacer wolfei
• †Diceratherium
  • †Diceratherium annectens
  • †Diceratherium armatum
• †Dilophodelphis – type locality for genus
  • †Dilophodelphis fordycei – type locality for species
• †Dinaelurus
  • †Dinaelurus crassus

• 

  Life restoration of the Eocene-Miocene false saber-toothed cat Dinictis. Robert Bruce Horsfall (1913).

  †Dinictis
  • †Dinictis cyclops
• †Diplobunops
  • †Diplobunops kardoula – type locality for species
• Diploclisia
  • †Diploclisia auriformis
• †Diplodipelta – type locality for genus
  • †Diplodipelta miocenica
  • †Diplodipelta reniptera
• Diplodonta
  • †Diplodonta parilis
• †Diploporus
  • †Diploporus torreyoides
• †Dipoides
  • †Dipoides smithi – type locality for species
  • †Dipoides stirtoni – type locality for species
  • †Dipoides vallicula
• †Diprionomys
  • †Diprionomys parvus
• Dipteronia
• Discinisca
  • †Discinisca oregonensis
• †Domninoides
• Dosinia
  • †Dosinia whitneyi

• 

  Horns and other fossils attributed to Dromomeryx

  †Dromomeryx
  • †Dromomeryx borealis
• †Durocarpus
  • †Durocarpus cordatus
• †Dyticonastis – type locality for genus
  • †Dyticonastis rensbergeri – type locality for species

E

• Echinophoria
  • †Echinophoria dalli
• †Ectinochilus
  • †Ectinochilus macilenta
• †Ekgmowechashala
• †Emmenopterys
  • †Emmenopterys dilcheri

• 

  Life restoration of the Oligocene-Miocene Enaliarctos and the toothed whale Macrodelphinus (background)

  †Enaliarctos
  • †Enaliarctos barnesi – type locality for species
  • †Enaliarctos emlongi – type locality for species
  • †Enaliarctos mitchelli
  • †Enaliarctos tedfordi – type locality for species
• Engelhardtia
  • †Engelhardtia olsoni
• Enhydra
• †Enhydrocyon
  • †Enhydrocyon prolatus
  • †Enhydrocyon stenocephalus
• Ennucula
  • †Ennucula nuculana

• 

  Ensete

  †Ensete
  • †Ensete oregonense – type locality for species
• †Entoptychus
  • †Entoptychus individens
  • †Entoptychus planifrons
  • †Entoptychus wheelerensis
• †Eohypserpa
  • †Eohypserpa scottii
• †Eopleurotoma
  • †Eopleurotoma ornata – or unidentified related form
• †Eosiphonalia
  • †Eosiphonalia oregonensis
• Epacroleda – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Epacroleda epacris

• 

  Mounted fossilized skeleton of the Miocene bone-crushing dog Epicyon

  †Epicyon
  • †Epicyon haydeni
  • †Epicyon saevus
• †Epihippus
  • †Epihippus gracilis
• Epilucina
  • †Epilucina washingtoniana
• Epitonium
  • †Epitonium condoni
  • †Epitonium hindsii
  • †Epitonium keaseyense
  • †Epitonium keaseyensis
  • †Epitonium schencki
  • †Epitonium wyattdurhami – type locality for species

• 

  Fossilized skull of the Oligocene-Miocene oreodont mammal Eporeodon

  †Eporeodon
  • †Eporeodon occidentalis
  • †Eporeodon trigonocephalus
• †Equisetum
• Equus
  • †Equus pacificus
• †Eremochen – type locality for genus
  • †Eremochen russelli – type locality for species
• †Erismatura
  • †Erismatura jamaicensis
• Erolia
  • †Erolia melanotos
• Ervilia – tentative report
  • †Ervilia oregonensis
• †Eschatius
• †Eubrontotherium – type locality for genus
  • †Eubrontotherium clarnoensis – type locality for species
• †Eucastor
  • †Eucastor malheurensis

• 

  Fossilized skeleton of the Miocene-Pliocene coyote-like canine Eucyon

  †Eucyon
  • †Eucyon davisi
• †Euoplocyon
  • †Euoplocyon brachygnathus
• Euphagus
  • †Euphagus cyanocephalus
• Eurytellina
  • †Eurytellina aduncanasa
• Euspira
  • †Euspira clementensis
  • †Euspira hotsoni
  • †Euspira nuciformis
  • †Euspira pallida
• †Eutrephoceras
  • †Eutrephoceras oregonense
• Exbucklandia
  • †Exbucklandia oregonensis
• †Exilia
  • †Exilia bentsonae – type locality for species
  • †Exilia lincolnensis

F

• Fagus
  • †Fagus pacifica
• Falco
  • †Falco oregonus – type locality for species
• Felaniella
  • †Felaniella snavelyi
• Ferminoscala
  • †Ferminoscala dickersoni
• †Ferrignocarpus
  • †Ferrignocarpus bivalvis

• 

  A living Ficus, or fig tree

  Ficus
  • †Ficus modesta
  • †Ficus ocoyanum – or unidentified comparable form
• Fimbria
• †Fimbrialata
  • †Fimbrialata wingii
• Flabellum
  • †Flabellum oregonense – type locality for species
• †Flectorivus
  • †Flectorivus microdontos
• †Florentiamys
• †Floridaceras
  • †Floridaceras whitei

• 

  Flower of the Eocene-Oligocene cocoa relative Florissantia

  †Florissantia
  • †Florissantia ashwillii – type locality for species
  • †Florissantia speirii
• †Fokieniopsis
  • †Fokieniopsis praedecurrens
• †Fortunearites
  • †Fortunearites endressii
• †Fothergilla
  • †Fothergilla praeovata
• †Fragarites
  • †Fragarites ramificans
• †Fraxinus
  • †Fraxinus coulteri
• Fulgoraria
  • †Fulgoraria indurata
• Fulgurofusus
  • †Fulgurofusus serratus – type locality for species
• Fulica

  • 

    A living Fulica americana, or American coot

    Fulica americana
  • †Fulica infelix – type locality for species
  • †Fulica minor – type locality for species
• †Fusinis
  • †Fusinis dilleri – type locality for species
• Fusinus
  • †Fusinus coosensis
  • †Fusinus dilleri

G

• †Gagaria
  • †Gagaria crenularis – type locality for species

• 

  A living Gaillardia, or blanket flower

  †Gaillardia
  • †Gaillardia thomsoni
• Gari – tentative report
  • †Gari furcata – or unidentified related form
• Gemmula
  • †Gemmula bentsonae
  • †Gemmula facula
  • †Gemmula rockcreekensis
• †Gentilicamelus
  • †Gentilicamelus cameloides – type locality for species
  • †Gentilicamelus sternbergi
• Glaucionetta
  • †Glaucionetta islandica
• †Globulicarpium
  • †Globulicarpium levigatum
• Glycymeris
  • †Glycymeris major
  • †Glycymeris sagittata
  • †Glycymeris septentrionalis
• Glyptocidaris
• †Goedertius – type locality for genus
  • †Goedertius oregonensis – type locality for species

• 

  Mounted fossilized skeleton of the Miocene-Pleistocene elephant relative Gomphotherium

  †Gomphotherium
  • †Gomphotherium obscurum
• †Goniodontomys
  • †Goniodontomys disjunctus – type locality for species
• Granula
  • †Granula profundorum – type locality for species
• Gyrineum – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Gyrineum dilleri

H

• †Hadrianus
• Halesia
  • †Halesia oregona
• Haliaeetus
  • †Haliaeetus leucocephalus

• 

  Fossilized mandible of the Eocene horse Haplohippus

  †Haplohippus
  • †Haplohippus texanus
• †Haplomys
  • †Haplomys liolophus
• †Hemiauchenia – tentative report
• †Hemipsalodon
  • †Hemipsalodon grandis
• Hemithiris
  • †Hemithiris psittacea
• †Heptacodon
• Heptranchias
  • †Heptranchias howelli

• 

  Life restoration of the Eocene-Miocene mammal Herpetotherium

  †Herpetotherium
  • †Herpetotherium merriami
• †Hesperhys – or unidentified comparable form
• †Hesperogaulus
  • †Hesperogaulus gazini – type locality for species
  • †Hesperogaulus wilsoni – type locality for species
• †Hesperolagomys
  • †Hesperolagomys galbreathi – or unidentified comparable form
• †Hesperosorex – tentative report
• Heteropora
• †Hexacarpellites
  • †Hexacarpellites hallii
• Hiatella
• Himantopus
  • †Himantopus mexicanus
• †Hippotherium

• 

  Life restoration of the Eocene-Oligocene false saber-toothed cat Hoplophoneus. Robert Bruce Horsfall (1913).

  †Hoplophoneus
  • †Hoplophoneus cerebralis
  • †Hoplophoneus strigidens
• †Hovenia
  • †Hovenia oregonensis
• Hydrangea
  • †Hydrangea knowltonii
• †Hydrochelidon
  • †Hydrochelidon nigra
• †Hypertragulus
  • †Hypertragulus calcaratus
  • †Hypertragulus hesperius
  • †Hypertragulus planiceps

• 

  Life restoration of the Miocene horse Hypohippus. Heinrich Harder (1920).

  †Hypohippus
  • †Hypohippus osborni
• †Hypolagus
  • †Hypolagus fontinalis
  • †Hypolagus oregonensis – type locality for species
  • †Hypolagus vetus
• †Hypomorphnus
  • †Hypomorphnus sodalis – tentative report
• †Hypsidoris
  • †Hypsidoris oregonensis – type locality for species
• †Hypsiops
  • †Hypsiops breviceps
• †Hyrachyus
  • †Hyrachyus eximius
• †Hystricops
  • †Hystricops browni

I

• 

  Fossilized skull of the Miocene bear Indarctos

  †Indarctos
  • †Indarctos oregonensis – type locality for species
• †Ingentisorex
  • †Ingentisorex tumididens
• †Iodes
  • †Iodes chandlerae
  • †Iodes multirecticulata
• †Iodicarpa
  • †Iodicarpa ampla
  • †Iodicarpa lenticularis
• Isocrinus
• Isurus
  • †Isurus planus

J

• †Jimomys
  • †Jimomys lulli
• †Joejonesia
  • †Joejonesia globosa
• †Juglandiphyllites
  • †Juglandiphyllites cryptatus

• 

  A living Juglans, or walnut tree

  Juglans
  • †Juglans clarnensis
  • †Juglans wheelerensis

K

• 

  Restoration of the Oligocene-Miocene horse Kalobatippus

  †Kalobatippus
• †Kardiasperma
  • †Kardiasperma parvum
• Katherinella
  • †Katherinella angustifrons
• †Keasius
  • †Keasius taylori – type locality for species
• Kellia
  • †Kellia saxiriva – type locality for species
  • †Kellia vokesi – type locality for species
• †Keteleeria
  • †Keteleeria rujadana
• †Kewia
  • †Kewia marquamensis – type locality for species
• †Kolponomos
  • †Kolponomos newportensis – type locality for species

L

• Lacuna

  • 

    Illustration of shells in multiple views of Lacuna vincta, or northern lacuna sea snails

    †Lacuna vincta
• Lamelliconcha
  • †Lamelliconcha clarki
• †Langtonia
  • †Langtonia bisulcata
• †Lantanotherium
• Larus
  • †Larus argentatus

  • 

    A living Larus californicus, or California gull

    †Larus californicus
  • †Larus oregonus – type locality for species
  • †Larus philadelphia
  • †Larus pristinus – type locality for species
  • †Larus robustus – type locality for species
• †Laurocalyx
  • †Laurocalyx wheelerae
• †Laurocarpum
  • †Laurocarpum hancockii
  • †Laurocarpum nutbedensis
  • †Laurocarpum raisinoides
• †Leguminocarpon
• †Leidymys
• Lepeta
  • †Lepeta concentrica
• †Leptarctus
  • †Leptarctus oregonensis

• 

  Illustration of a fossilized skull of the Oligocene-Miocene dog Leptocyon

  †Leptocyon
  • †Leptocyon douglassi
  • †Leptocyon mollis
  • †Leptocyon vulpinus
• †Leptodontomys
  • †Leptodontomys oregonensis – type locality for species
  • †Leptodontomys quartzi
• Lepus
  • †Lepus ennisianus
• Leukoma
  • †Leukoma staminea
• †Lignicarpus
  • †Lignicarpus crassimuri
• †Ligniglobus
  • †Ligniglobus sinuosifibrae
• †Limicolavis
  • †Limicolavis pluvianella – type locality for species
• Limnodromus

  • 

    A living Limnodromus griseus, or short-billed dowitcher

    †Limnodromus griseus – tentative report
• †Limnoecus
  • †Limnoecus tricuspis – or unidentified comparable form
• Lindera
  • †Lindera clarnensis
  • †Lindera oregona
• †Liodontia
  • †Liodontia alexandrae
  • †Liodontia furlongi

• 

  The autumn foliage of a living Liquidambar, or sweetgum tree

  Liquidambar
• †Liracassis
  • †Liracassis petrosa
• †Litheuphaea – type locality for genus
  • †Litheuphaea carpenteri – type locality for species
• †Lithocarpus
  • †Lithocarpus klamathensis
• †Litorhadia
  • †Litorhadia astoriana
  • †Litorhadia washingtonensis
  • †Litorhadia washingtoni
• †Litseaphyllum
  • †Litseaphyllum presanguinea
• Littorina
  • †Littorina remondi
• †Lobipes
  • †Lobipes lobatus
• Lophodytes

  • 

    A living Lophodytes cucullatus, or hooded merganser

    †Lophodytes cucullatus
• †Lophopanopeus
  • †Lophopanopeus baldwini – type locality for species
• †Lophortyx
  • †Lophortyx shotwelli – type locality for species
• Lucinoma
  • †Lucinoma acutilineata
  • †Lucinoma columbiana
• †Lunaticarpa
  • †Lunaticarpa curvistriata
• †Lutravus
  • †Lutravus halli – or unidentified comparable form
• Lynx
  • †Lynx longignathus

• 

  A living Lytechinus sea urchin

  Lytechinus
  • †Lytechinus baldwini – type locality for species

M

• †Macginicarpa
  • †Macginicarpa glabra

• 

  Fossilized cranium of the Miocene-Pleistocene saber-toothed cat Machairodus

  †Machairodus
• †Machilus
  • †Machilus asiminoides
• Macoma
  • †Macoma albaria
  • †Macoma arcatata
  • †Macoma astori
  • †Macoma calcarea
  • †Macoma golikovi
  • †Macoma inquinata

  • 

    Shell of Macoma nasuta, or the bent-nosed clam

    †Macoma nasuta
  • †Macoma vancouverensis
• Macrocallista
  • †Macrocallista pittsburgensis
• †Macrognathomys
  • †Macrognathomys nanus
• Mactromeris
  • †Mactromeris albaria
  • †Mactromeris pittsburgensis
  • †Mactromeris polynyma
  • †Mactromeris ramonensis
  • †Mactromeris veneriformis

• 

  Close-up view of a Magnolia flower

  Magnolia
  • †Magnolia muldoonae
  • †Magnolia paroblonga
  • †Magnolia tiffneyi
• Mahonia
  • †Mahonia simplex
• †Malus – or unidentified comparable form
• †Mammut
  • †Mammut furlongi – type locality for species
• †Mammuthus

  • 

    Life restoration of a herd of Mammuthus columbi, or Columbian mammoths. The extent of the fur depicted is hypothetical. Charles R. Knight (1909).

    †Mammuthus columbi – tentative report
• Marcia
  • †Marcia bunkeri
  • †Marcia oregonensis
• Margarites
  • †Margarites pupilla
• †Marshochoerus
  • †Marshochoerus socialis
• Martes
  • †Martes gazini – type locality for species
• Martesia
  • †Martesia turnerae
• Mastixia
• †Mastixicarpum
  • †Mastixicarpum occidentale
• †Mastixioidiocarpum
  • †Mastixioidiocarpum oregonense
• Megachasma
  • †Megachasma applegatei

• 

  Mounted fossilized skeleton of the Miocene-Pleistocene ground sloth Megalonyx

  †Megalonyx
• †Megapaloelodus
  • †Megapaloelodus opsigonus – type locality for species
• †Megatylopus
• Megayoldia
  • †Megayoldia chehalisensis
• Melanitta
  • †Melanitta deglandi
  • †Melanitta perspicillata
• †Meliosma
  • †Meliosma beusekomii
  • †Meliosma bonesii
  • †Meliosma elongicarpa
  • †Meliosma jenkinsii
  • †Meliosma leptocarpa
• †Meniscomys
  • †Meniscomys uhtoffi
• †Menispermum – or unidentified comparable form
• Mergus
  • †Mergus merganser
  • †Mergus serrator

• 

  Life restoration of the Miocene three-toed horse Merychippus

  †Merychippus
  • †Merychippus brevidontus
  • †Merychippus relictus
• †Merychyus
  • †Merychyus arenarum
  • †Merychyus minimus
• †Merycochoerus
  • †Merycochoerus magnus
  • †Merycochoerus matthewi
  • †Merycochoerus minor
• †Merycoides
  • †Merycoides longiceps
• †Merycoidodon
  • †Merycoidodon bullatus

• 

  Skull fossils of the Oligocene-Miocene dog Mesocyon

  †Mesocyon
  • †Mesocyon brachyops
  • †Mesocyon coryphaeus
• †Mesohippus
  • †Mesohippus bairdi – or unidentified comparable form
• †Metalopex
  • †Metalopex merriami
• Metasequoia
  • †Metasequoia occidentalis
• †Microphallus
  • †Microphallus perplexus
• Micropodium
  • †Micropodium ovatum
• †Micropternodus
  • †Micropternodus morgani
• Microtus
  • †Microtus montanus

• 

  Fossilized skull of the Eocene-Oligocene three-toed horse Miohippus

  †Miohippus
  • †Miohippus intermedius
• †Miopleionia
  • †Miopleionia oregonensis
• †Mioplejonia
  • †Mioplejonia oregonensis
• †Miotapirus
• †Mistia – type locality for genus
  • †Mistia spinosa – type locality for species
• Modiolatus
  • †Modiolatus rectus
• Modiolus
  • †Modiolus eugenensis
  • †Modiolus modiolus
• †Molopophorus
  • †Molopophorus anglonana
  • †Molopophorus dalli
  • †Molopophorus fishii
  • †Molopophorus gabbi
  • †Molopophorus matthewi
• Molothrus
  • †Molothrus ater – tentative report
• †Monosaulax
  • †Monosaulax progressus – type locality for species
  • †Monosaulax typicus – type locality for species
• †Moropus
  • †Moropus oregonensis
• Mulinia
  • †Mulinia eugenensis
• Mustela
• †Mya
  • †Mya grewingki
  • †Mya truncata
• †Mylagaulodon
  • †Mylagaulodon angulatus
• Myotis – or unidentified comparable form
• †Mystipterus
  • †Mystipterus pacificus
• †Mystocheilus – type locality for genus[1]
  • †Mystocheilus fresti – type locality for species[1]
• Mytilus
  • †Mytilus californianus
  • †Mytilus edulis
  • †Mytilus middendorffi
  • †Mytilus snohomishensis

N

• †Nanotragulus – or unidentified comparable form

• 

  A living Nassarius, or nassa mud snail

  Nassarius
  • †Nassarius arnoldi
  • †Nassarius fossata
  • †Nassarius lincolnensis
  • †Nassarius perpinguis
• Natica
  • †Natica thomsonae
  • †Natica weaveri
• †Nautilus
  • †Nautilus angustatus – type locality for species
• Nectandra
  • †Nectandra presannguinea
• †Nehalemia – type locality for genus
  • †Nehalemia delicata – type locality for species
• Nemocardium
  • †Nemocardium formosum
  • †Nemocardium griphus – or unidentified comparable form
  • †Nemocardium linteum
• †Neohipparion
  • †Neohipparion leptode – or unidentified comparable form

• 

  Mounted fossilized skeleton of the Miocene Neophrontops

  Neophrontops
  • †Neophrontops dakotensis
• Neotamias
  • †Neotamias malloryi
• †Nephrosemen
  • †Nephrosemen reticulatus
• Nettion
  • †Nettion bunkeri
• †Neurotrichus – tentative report
  • †Neurotrichus columbianus
• Neverita
  • †Neverita globosa
  • †Neverita jamesae
  • †Neverita thomsonae
  • †Neverita washingtonensis
• †Nexuotapirus
  • †Nexuotapirus robustus
• Nucella
  • †Nucella decemcostata
  • †Nucella lamellosa
  • †Nucella saxicola

• 

  Interior of a fossilized shell of the Early Ordovician-modern marine bivalve Nucula

  Nucula
  • †Nucula vokesi
• Nuculana
  • †Nuculana gabbi
  • †Nuculana nuculana
• Numenius
  • †Numenius americanus – tentative report
• †Nuphar
• Nutricola
  • †Nutricola lordi
  • †Nutricola tantilla
• Nyroca
  • †Nyroca affinis
  • †Nyroca americana
  • †Nyroca collaris – tentative report
• †Nyssa
  • †Nyssa scottii
  • †Nyssa spatulata

O

• †Ocajila

• 

  A living Ochotona, or pika

  Ochotona
  • †Ochotona spanglei – type locality for species
• Ocotea
  • †Ocotea ovoidea
• †Ocyplonessa
  • †Ocyplonessa shotwelli – type locality for species
• †Odontocaryoidea
  • †Odontocaryoidea nodulosa
• †Ogmophis – type locality for genus
  • †Ogmophis oregonensis – type locality for species
• Olar
  • †Olar buccinator
• †Olequahia
  • †Olequahia schencki
• †Oligobunis
• Olivella

  • 

    Three living Olivella biplicata, or purple dwarf olive sea snail

    †Olivella biplicata
  • †Olivella mathewsonii
  • †Olivella pedroana
• †Omsicarpium
  • †Omsicarpium striatum
• Ondatra
  • †Ondatra annectens – type locality for species
• Opalia
  • †Opalia hertleini
  • †Opalia williamsoni – or unidentified comparable form
• †Oregonomys
  • †Oregonomys pebblespringsensis – type locality for species
  • †Oregonomys sargenti
• †Oreodontoides
  • †Oreodontoides oregonensis
• †Oreolagus
  • †Oreolagus wallacei – type locality for species
• †Oryctoantiquus – type locality for genus
  • †Oryctoantiquus borealis – type locality for species
• †Osbornodon
  • †Osbornodon sesnoni

• 

  Living Osmunda ferns

  †Osmunda
  • †Osmunda occidentale
• Ostrea
  • †Ostrea lurida – or unidentified comparable form
• Ostrya
  • †Ostrya oregoniana

P

• †Pachycrommium
  • †Pachycrommium clarki
• †Paciculus
• †Pacificotaria – type locality for genus
  • †Pacificotaria hadromma – type locality for species
• †Palaeoallophylus
  • †Palaeoallophylus globosa
  • †Palaeoallophylus gordonii
• †Palaeocarya
  • †Palaeocarya clarnensis
  • †Palaeocarya olsonii – or unidentified comparable form

• 

  Life restoration of the Oligocene-Miocene beaver Palaeocastor

  †Palaeocastor
  • †Palaeocastor peninsulatus
• †Palaeolagus
  • †Palaeolagus haydeni
• †Palaeophytocrene
  • †Palaeophytocrene hancockii
  • †Palaeophytocrene pseudopersica
• †Palaeosinomenium
  • †Palaeosinomenium venablesii
• †Paleopanax
  • †Paleopanax oregonensis
• †Paleoplatycarya – tentative report
  • †Paleoplatycarya hickeyi
• †Paleotetrix
  • †Paleotetrix gilli

• 

  Flowers and foliage of a living Paliurus

  Paliurus
  • †Paliurus blakei
• Pandora
  • †Pandora eocapsella
  • †Pandora grandis
  • †Pandora laevis
• Panomya
  • †Panomya ampla
• Panopea
  • †Panopea abrupta
  • †Panopea ramonensis
  • †Panopea snohomishensis
• Panthera

  • 

    A living Panthera onca, or jaguar

    †Panthera onca – or unidentified comparable form
• †Parablastomeryx
• †Paracarpinus
  • †Paracarpinus chaneyi
• †Paracosoryx
  • †Paracosoryx nevadensis – or unidentified comparable form
• †Paracryptotis
  • †Paracryptotis rex
• †Paradaphoenus
  • †Paradaphoenus cuspigerus
• †Paradomnina
  • †Paradomnina relictus – type locality for species
• †Paraenhydrocyon
  • †Paraenhydrocyon josephi
  • †Paraenhydrocyon wallovianus
• †Parahippus
  • †Parahippus leonensis – or unidentified related form
  • †Parahippus pawniensis

• 

  Fossilized skeleton of the Pliocene-Pleistocene ground sloth Paramylodon

  †Paramylodon
  • †Paramylodon harlani
• †Parapaenemarmota
  • †Parapaenemarmota oregonensis
• Parapholas
  • †Parapholas californica
• †Parapliosaccomys
  • †Parapliosaccomys oregonensis
• †Parasyrinx
  • †Parasyrinx delicata
• †Paratomarctus
  • †Paratomarctus temerarius

• 

  Life restoration the Eocene-Oligocene camel Paratylopus (upper right)

  †Paratylopus
• †Paronychomys
  • †Paronychomys shotwelli – type locality for species
• †Paroreodon
  • †Paroreodon parvus
  • †Paroreodon stocki
• †Parrotia
  • †Parrotia brevipetiolata
• †Parthenocissus
  • †Parthenocissus angustisulcata
  • †Parthenocissus clarnensis
• Parvamussium
  • †Parvamussium astoriana
• Parvicardium
  • †Parvicardium eugenense
• Passalus
  • †Passalus indormitus – type locality for species
• †Pasternackia
  • †Pasternackia pusilla
• Patinopecten
  • †Patinopecten caurinus
  • †Patinopecten coosensis
  • †Patinopecten oregonensis
  • †Patinopecten popatulus
  • †Patinopecten propatulus
• †Patriofelis
  • †Patriofelis ferox
• †Pediocetes
  • †Pediocetes lucasii – type locality for species
  • †Pediocetes nanus – type locality for species
  • †Pediocetes phasianellus
• Pekania
  • †Pekania occulta – type locality for species

• 

  Life restoration of the Oligocene-Pleistocene false-toothed bird Pelagornis

  †Pelagornis
• Pelecanus
  • †Pelecanus erythrorhynchos
  • †Pelecanus erythrorhynchus – tentative report
• Penitella
  • †Penitella penita
• †Pentoperculum
  • †Pentoperculum minimus
• †Perchoerus
  • †Perchoerus probus
• †Peridiomys
  • †Peridiomys oregonensis
• Periploma
• Perognathus
  • †Perognathus stevei – type locality for species

• 

  A living Peromyscus, or deer mouse

  Peromyscus
  • †Peromyscus antiquus
  • †Peromyscus dentalis
• †Perse
  • †Perse lincolnensis
  • †Perse pittsburgensis
• †Petauristodon
• Phalacrocorax
  • †Phalacrocorax auritus – tentative report
  • †Phalacrocorax leptopus – type locality for species
  • †Phalacrocorax macropus
  • †Phalacrocorax marinavis – type locality for species
• Phalaropus
  • †Phalaropus lobatus
• Phalium
  • †Phalium aequisulcatum
  • †Phalium turricula
• Phanerolepida
  • †Phanerolepida oregonensis
• †Philotrox
  • †Philotrox condoni
• †Phlaocyon
  • †Phlaocyon latidens
• Phoca
  • †Phoca vitulina – or unidentified comparable form
• †Phocavis – type locality for genus
  • †Phocavis maritimus – type locality for species

• 

  Two Phoenicopterus, or flamingos

  Phoenicopterus
  • †Phoenicopterus copei – type locality for species
• †Pileosperma
  • †Pileosperma minutum
  • †Pileosperma ovatum
• †Pinckneya
  • †Pinckneya dilcheri
• †Pinis
  • †Pinis johndayensis
• †Pinnarctidion
  • †Pinnarctidion rayi – type locality for species

• 

  A living Pinus, or pine tree

  Pinus
  • †Pinus johndayensis
  • †Pinus knowltoni
• †Pistachioides
  • †Pistachioides striata
• Pitar
  • †Pitar clarki
  • †Pitar dalli
• †Plafkeria
  • †Plafkeria obliquifolia
• †Plagiolophus
  • †Plagiolophus weaveri
• Platanus
  • †Platanus condoni
  • †Platanus condonii
  • †Platanus dissecta
  • †Platanus exaspera
  • †Platanus hirticarpa

• 

  Restoration of a herd of alarmed Miocene-Pleistocene peccaries of the genus Platygonus. Charles R. Knight (1922).

  †Platygonus
  • †Platygonus brachirostris
  • †Platygonus oregonensis
  • †Platygonus vetus – or unidentified comparable form
• †Pleiolama
  • †Pleiolama vera – or unidentified comparable form
• †Plesiocolopirus
  • †Plesiocolopirus hancocki
• †Plesiogulo
  • †Plesiogulo marshalli
• †Plesiosorex
  • †Plesiosorex donroosai – or unidentified comparable form
• †Pleurolicus
  • †Pleurolicus sulcifrons
• †Pleurolira
  • †Pleurolira oregonensis
• †Pleuroliria
  • †Pleuroliria bicarinata
• †Plioceros
• †Pliocyon – or unidentified comparable form
  • †Pliocyon medius

• 

  Fossilized skull of the Miocene horse Pliohippus

  †Pliohippus
  • †Pliohippus spectans
• †Plionarctos
• †Plionictis
  • †Plionictis ogygia
  • †Plionictis oregonensis
• †Pliosaccomys
• †Pliotaxidea
  • †Pliotaxidea nevadensis
• †Pliozapus
  • †Pliozapus solus
• Podiceps
  • †Podiceps auritus – tentative report
• Podilymbus
  • †Podilymbus podiceps
• Pododesmus
  • †Pododesmus macrochisma

• 

  Life restoration of the Oligocene false saber-toothed cat Pogonodon in a tree

  †Pogonodon
  • †Pogonodon brachyops
  • †Pogonodon platycopis – type locality for species
• Polinices
  • †Polinices canalis
  • †Polinices draconis
  • †Polinices galianoi
  • †Polinices washingtonensis
  • †Polinices washingtoni
• †Polinicies
  • †Polinicies clementensis
  • †Polinicies nuciformis
• †Pollostosperma
  • †Pollostosperma dictyum
• †Polygrana
  • †Polygrana nutbedense

• 

  Fronds of living Polypodium ferns

  †Polypodium – or unidentified comparable form
• †Pontolis – type locality for genus
  • †Pontolis magnus – type locality for species
• †Potamogeton
  • †Potamogeton parva
• †Potanospira
  • †Potanospira fryi
• †Praehyalocylis
  • †Praehyalocylis cretacea
• †Priscofusus
  • †Priscofusus coli – or unidentified comparable form
  • †Priscofusus geniculus
  • †Priscofusus medialis
  • †Priscofusus medialus
  • †Priscofusus stewarti
• †Pristichampsus
• †Procadurcodon – report made of unidentified related form or using admittedly obsolete nomenclature
• †Procamelus
  • †Procamelus grandis – or unidentified comparable form
• †Procerapex
  • †Procerapex bentsonae
• Proischyromys – type locality for genus
  • †Proischyromys perditus – type locality for species
• †Promartes – or unidentified comparable form
• †Promerycochoerus
  • †Promerycochoerus macrostegus
  • †Promerycochoerus superbus
• †Proneotherium – type locality for genus
  • †Proneotherium repenningi – type locality for species
• †Pronotolagus
• Propeamussium
  • †Propeamussium clallamensis – or unidentified comparable form
• †Prosomys
  • †Prosomys mimus – type locality for species
• †Prosthennops
  • †Prosthennops serus – tentative report
• †Proterozetes – type locality for genus
  • †Proterozetes ulysses – type locality for species

• 

  Life restoration of the Eocene brontothere mammal Protitanops

  †Protitanops
  • †Protitanops curryi
• †Protolabis – or unidentified comparable form
• †Protorepomys – type locality for genus[2]
• †Protospermophilus
  • †Protospermophilus malheurensis
• Protothaca
  • †Protothaca staleyi
• †Pruniticarpa
  • †Pruniticarpa cevallosii
• Prunus
  • †Prunus olsonii
  • †Prunus weinsteinii
• Psammacoma
  • †Psammacoma arctata
• †Psephophorus – tentative report
  • †Psephophorus oregonensis – type locality for species

• 

  Restoration of the Miocene cat Pseudaelurus

  †Pseudaelurus
• †Pseudoblastomeryx
  • †Pseudoblastomeryx advena
• †Pseudotheridomys
  • †Pseudotheridomys pagei
• †Pseudotomus
• †Pseudotrimylus
  • †Pseudotrimylus mawbyi
• †Pseudotsuga
  • †Pseudotsuga laticarpa
• Pteris
  • †Pteris silvicola
• Pterocarya
  • †Pterocarya mixta
  • †Pterocarya occidentalis
• †Pteronarctos – type locality for genus
  • †Pteronarctos goedertae – type locality for species
  • †Pteronarctos piersoni – type locality for species
• †Pteronepelys
  • †Pteronepelys wehrii
• †Pulvinisperma
  • †Pulvinisperma minutum
• Puncturella
  • †Puncturella galeata
• Pupillaria – tentative report
• Purpura
  • †Purpura foliata
  • †Purpura lurida
• Pyramidella – tentative report
• Pyrenacantha
  • †Pyrenacantha occidentalis
• †Pyrisemen
  • †Pyrisemen attenuatum

• 

  Fruit of a living Pyrus, or pear tree

  †Pyrus
  • †Pyrus oregonensis

Q

• 

  A living Quercus, or oak tree

  Quercus
  • †Quercus berryi
  • †Quercus consimilis
  • †Quercus paleocarpa
• Querquedula
  • †Querquedula pullulans – type locality for species
• †Quintacava
  • †Quintacava velosida

R

• Raja
• Rallus
  • †Rallus limicola
• Raninoides
  • †Raninoides washburnei
• Recurvirostra

  • 

    A living Recurvirostra americana, or American avocet

    †Recurvirostra americana
• Retusa
  • †Retusa petrosa
  • †Retusa tantilla
  • †Retusa turneri
• Rhabdus
  • †Rhabdus schencki
• †Rhizocyon
  • †Rhizocyon oregonensis
• Rhus
  • †Rhus lesquereuxii
  • †Rhus rooseae
  • †Rhus varians
• †Ribes
• Rimella
• Rosa
  • †Rosa hilliae

• 

  A living member of Rubus, the genus including blackberries (pictured) and raspberries

  Rubus
  • †Rubus ameyeri
  • †Rubus fremdii
• †Rudiocyon – type locality for genus
  • †Rudiocyon amplidens – type locality for species
• †Rudiomys
  • †Rudiomys mcgrewi

S

• 

  Living Sabal, or palmettos

  Sabal
  • †Sabal bracknellense
  • †Sabal jenkinsii
• †Sabia
  • †Sabia prefoetida
• Saccella
  • †Saccella amelga
  • †Saccella calkinsi
• Salenia
  • †Salenia cascadensis – type locality for species
  • †Salix schimperi
• †Sambucuspermites
  • †Sambucuspermites rugulosus
• Sanguinolaria
  • †Sanguinolaria townsendensis
• †Saportaspermum
  • †Saportaspermum occidentalis
• Sargentodoxa[3]
  • †* Sargentodoxa globosa[3] – type locality for species
• Sassia
  • †Sassia bilineata
• Saxicavella
  • †Saxicavella burnsi
• Saxidomus

  • 

    Shell of a living Saxidomus gigantea, or butter clam

    †Saxidomus gigantea
  • †Saxidomus giganteus
• †Saxifragispermum
  • †Saxifragispermum tetragonalis
• †Scabraecarpium
  • †Scabraecarpium clarnense
• †Scalaritheca
  • †Scalaritheca biseriata
• Scalina
  • †Scalina becki
  • †Scalina dickersoni – or unidentified related form
• †Scalopoides
  • †Scalopoides ripafodiator
• †Scapanoscapter
  • †Scapanoscapter simplicidens
• Scapanus
  • †Scapanus latimanus
  • †Scapanus proceridens
  • †Scapanus shultzi – or unidentified comparable form

• 

  Shells in multiple views of a Scaphander canoe bubble sea snail

  Scaphander
  • †Scaphander impuncatatus
  • †Scaphander impunctatus – type locality for species
  • †Scaphander stewarti
• †Scaphicarpium
  • †Scaphicarpium radiatum
• †Schisandra
  • †Schisandra oregonensis
• Schizaster
  • †Schizaster diabloensis
• †Schizodontomys
  • †Schizodontomys greeni

• 

  A living Sciurus squirrel

  Sciurus
  • †Sciurus ballovianus
  • †Sciurus wortmani
• †Scolecophagus
  • †Scolecophagus affinis – type locality for species
• †Scutella
  • †Scutella gabbi
• Searlesia – tentative report
  • †Searlesia carlsoni
• Semele
  • †Semele willamettensis
• Sequoia
  • †Sequoia affinis
• †Seuku
  • †Seuku emlongi – type locality for species
• †Sewellelodon
  • †Sewellelodon predontia – or unidentified comparable form
• Sideroxylon
  • †sideroxylon? subangularis – type locality for species
• Siliqua
  • †Siliqua patula
• †Simocetus – type locality for genus
  • †Simocetus rayi – type locality for species

• 

  Reconstruction of a fossilized skull and restorative portrait of the Miocene-Pliocene red panda relative Simocyon

  †Simocyon
  • †Simocyon primigenius
• Simomactra
  • †Simomactra falcata
• Sinum
  • †Sinum obliquum
  • †Sinum scopulosum
• Solariella
  • †Solariella cicca – type locality for species
  • †Solariella cidaris
• Solemya
  • †Solemya ventricosa
• Solen
  • †Solen sicarius
  • †Solen townsendensis
• Solena
  • †Solena conradi
  • †Solena eugenensis
  • †Solena novacularis

• 

  A living Somatochlora dragonfly

  †Somatochlora
  • †Somatochlora oregonica – type locality for species
• Spermophilus
  • †Spermophilus gidleyi
  • †Spermophilus mckayensis
  • †Spermophilus shotwelli
  • †Spermophilus tephrus
  • †Spermophilus wilsoni
• †Sphaerosperma
  • †Sphaerosperma riesii
• †Sphenophalos
• †Sphenosperma
  • †Sphenosperma baccatum
• †Spirocrypta
  • †Spirocrypta pileum
• Spirotropis
  • †Spirotropis calodius
  • †Spirotropis kincaidi
  • †Spirotropis washingtonensis
• Spisula
  • †Spisula densata
  • †Spisula eugenensis
• Spizaetus
  • †Spizaetus pliogryps

• 

  Fossilized partial skulls of the rodent Oligocene-Miocene Steneofiber

  †Steneofiber
  • †Steneofiber gradatus
• Stephanodiscus
  • †Stephanodiscus excentricus
  • †Stephanodiscus niagarae
  • †Stephanodiscus rhombus – type locality for species
• Stercorarius
  • †Stercorarius schufeldti – type locality for species
• Sterna
  • †Sterna elegans – tentative report
  • †Sterna forsteri
  • †Sterna fosteri – tentative report

• 

  Fossilized skeleton of the Miocene weasel Sthenictis

  Sthenictis
  • †Sthenictis junturensis – type locality for species
• †Stichopsammia – tentative report
  • †Stichopsammia vokesi
• †Stockeycarpa
  • †Stockeycarpa globosa
• †Stomechinus
  • †Stomechinus dissimilaris – type locality for species
• †Striatisperma
  • †Striatisperma coronapunctatum
• Strongylocentrotus
• Sturnella
• †Suavodrillia
  • †Suavodrillia winlockensis

• 

  Life restoration of the Eocene-Oligocene cow-sized rhinoceros Subhyracodon. Charles R. Knight (1890s).

  †Subhyracodon
• Surculites
  • †Surculites condonana
  • †Surculites wynoocheensis
• Sveltella
  • †Sveltella exiliplex
  • †Sveltella keaseyensis – type locality for species
• Symplocos
  • †Symplocos nooteboomii

T

• †Tanyoplatanus
  • †Tanyoplatanus cranei

• 

  A living Tapirus, or tapir

  Tapirus
  • †Tapirus californicus – or unidentified comparable form
• Tapiscia
  • †Tapiscia occidentalis
• Taranis
  • †Taranis columbiana
• †Tardontia
  • †Tardontia occidentale – or unidentified comparable form
• Taxidea
• †Taxus
  • †Taxus masonii
• Tegula
  • †Tegula stantoni
• †Tejonia
  • †Tejonia moragai

• 

  Restoration of the Miocene-Pliocene rhinoceros Teleoceras

  †Teleoceras
  • †Teleoceras fossiger
  • †Teleoceras hicksi
  • †Teleoceras medicornutum
• †Teletaceras
  • †Teletaceras radinskyi – type locality for species

• 

  Shell of a Tellina, or tellin

  Tellina
  • †Tellina aduncanasa
  • †Tellina aragonia
  • †Tellina emacerata
  • †Tellina eugenia
  • †Tellina idae – or unidentified related form
  • †Tellina lincolnensis
  • †Tellina pittsburgensis
  • †Tellina quasimacoma
• †Temnocyon
  • †Temnocyon altigenis
  • †Temnocyon fingeruti – type locality for species
• †Tenudomys – or unidentified comparable form
• †Tenuisperma
  • †Tenuisperma ellipticum
• †Tephrocyon
  • †Tephrocyon rurestris
• Terebratalia
  • †Terebratalia occidentalis
• Terebratulina
  • †Terebratulina unguicula
• Terminalia
  • †Terminalia oregona

• 

  Foliage and cones of a living Tetraclinis, or arar tree

  †Tetraclinis
  • †Tetraclinis potlachensis
• Thais
  • †Thais lamellosa
  • †Thais lima – or unidentified related form
• †Thanikaimonia
  • †Thanikaimonia geniculata
• Thesbia – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Thesbia antiselli: synonym of † Xenoturris antiselli (F. Anderson & B. Martin, 1914)
• †Thinohyus
  • †Thinohyus lentus
• Thomomys
  • †Thomomys townsendii
• Thracia
  • †Thracia condoni
  • †Thracia keaseyensis – type locality for species
  • †Thracia trapezoides

• 

  Fossilized skull of the Miocene oreodont mammal Ticholeptus

  †Ticholeptus
  • †Ticholeptus zygomaticus
• †Ticholepus
  • †Ticholepus zygomaticus
• †Tiffneycarpa
  • †Tiffneycarpa scleroidea
• Tilia
  • †Tilia aspera
  • †Tilia circularis
  • †Tilia fossilensis
  • †Tilia lamottei
  • †Tilia pedunculata
  • †Tilia penduculata
• †Tinomiscoidea
  • †Tinomiscoidea occidentalis
• Tinospora
  • †Tinospora elongata
  • †Tinospora hardmanae

• 

  Foliage of a living Torreya, or nutmeg yew

  †Torreya
  • †Torreya clarnensis
  • †Torreya masonii
• Totanus
  • †Totanus melanoleucas
• †Toxicodendron
  • †Toxicodendron wolfei
• Trema
  • †Trema nucilecta
• Tresus
  • †Tresus pajaroanus

• 

  Shell of a Trichotropis cap sea snail

  Trichotropis
  • †Trichotropis cancellata
  • †Trichotropis insignis
• †Trigonostela
  • †Trigonostela oregonensis
• †Tripartisemen
  • †Tripartisemen bonesii
• †Triplascapha
  • †Triplascapha collinsonae
• †Triplexivalva
  • †Triplexivalva rugata
• †Triplochitioxylon – type locality for genus
  • †Triplochitioxylon oregonensis – type locality for species
• †Trisepticarpium
  • †Trisepticarpium minutum
• †Tritonifusus
  • †Tritonifusus rectirostis
• Trochita

• 

  Shell of a Trophon murex snail

  Trophon
  • †Trophon halibrectus
  • †Trophon kernensis
  • †Trophon platacantha – type locality for species
• †Truncatisemen
  • †Truncatisemen sapotoides
• †Tsaphanomys – type locality for genus[2]
  • †Tsaphanomys shotwelli[2]
• †Tsuga
  • †Tsuga sonomensis
• Turricula
  • †Turricula emerita
  • †Turricula keaseyensis
• †Turrinosyrinx
  • †Turrinosyrinx nodifera
  • †Turrinosyrinx nodilifera
  • †Turrinosyrinx packardi – or unidentified comparable form
• Turris
  • †Turris coli
  • †Turris impecunia
  • †Turris perversa
  • †Turris smithi

• 

  Fossilized shells of the Late Jurassic-modern tower snail Turritella

  Turritella
  • †Turritella buwaldana
  • †Turritella keaseyense
  • †Turritella keaseyensis – type locality for species
  • †Turritella oregonensis
  • †Turritella pittsburgensis
  • †Turritella uvasana
• †Tylocephalonyx
• Tympanuchus
  • †Tympanuchus pallidicinctus
• †Typhoides
  • †Typhoides buzekii

U

• 

  A living Ulmus, or elm

  Ulmus
  • †Ulmus chaneyi
  • †Ulmus speciosa
• †Ulospermum
  • †Ulospermum hardingae
• †Unknown
• †Unknown dicotyledonous
• †Unknown monocotyledonous
• †Ursavus
  • †Ursavus primaevus – or unidentified comparable form

V

• Venericardia
  • †Venericardia aragonia – or unidentified comparable form
  • †Venericardia hornii
  • †Venericardia merriami – or unidentified comparable form
  • †Venericardia planicosta
• †Vertipecten
  • †Vertipecten fucanus – or unidentified comparable form

• 

  Leaves and fruit of a living Viburnum.

  †Viburnum
  • †Viburnum tubmanum

• 

  Leaves and fruit of a living Vitis, or grapevine

  Vitis
  • †Vitis magnisperma
  • †Vitis tiffneyi
• Vulpes
  • †Vulpes stenognathus

W

• †Wheelera
  • †Wheelera lingnicrusta

X

• 

  A living Xema sabini, or Sabine's gull

  Xema
  • †Xema sabinii
• †Xenicohippus
  • †Xenicohippus craspedotum
• †Xylotitan – type locality for genus
  • †Xylotitan cenosus – type locality for species

Y

• †Yaquinacetus – type locality for genus[4]
  • †Yaquinacetus meadi – type locality for species[4]
• Yoldia
  • †Yoldia cooperii – or unidentified comparable form
  • †Yoldia impressa
  • †Yoldia oregona
  • †Yoldia seminuda
  • †Yoldia tenuissima

Z

• Zalophus

  • 

    A living Zalophus californianus, or California sea lion

    †Zalophus californianus
• †Zanthopsis
  • †Zanthopsis rathbunae – type locality for species
• Zelkova
  • †Zelkova hesperia
  • †Zelkova oregoniana
• †Zingiberopsis

References

1. Gerald R. Smith; Jay Van Tassell (2019). "Fishes of the Mio-Pliocene Western Snake River Plain and vicinity. V. Keating, Always Welcome Inn, and Imbler Fish paleofaunas, NE Oregon: Tests of Miocene-Pliocene drainage connections". Miscellaneous Publications. Museum of Zoology, University of Michigan. 204 (5): 1–33. hdl:2027.42/150494.
2. Robert A. Martin; Richard J. Zakrzewski (2019). "On the ancestry of woodrats". Journal of Mammalogy. 100 (5): 1564–1582. doi:10.1093/jmammal/gyz105.
3. Manchester, S. R. (1999). "Biogeographical relationships of North American tertiary floras". Annals of the Missouri Botanical Garden. 86: 472–522. doi:10.2307/2666183. JSTOR 2666183.
4. Olivier Lambert; Stephen J. Godfrey; Erich M. G. Fitzgerald (2019). "Yaquinacetus meadi, a new latest Oligocene–early Miocene dolphin (Cetacea, Odontoceti, Squaloziphiidae, fam. nov.) from the Nye Mudstone (Oregon, U.S.A.)". Journal of Vertebrate Paleontology. 38 (6): e1559174. doi:10.1080/02724634.2018.1559174. S2CID 108903672.

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