List of the prehistoric life of California

This list of the prehistoric life of California contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of California.

Precambrian

The Paleobiology Database records no known occurrences of Precambrian fossils in California.

Paleozoic

Main article: List of the Paleozoic life of California

Selected Paleozoic taxa of California

• † Advenella
• † Agathiceras
• † Ampyx – tentative report
• † Ampyx
• † Apatolichas

• 

  Fossils of the mysterious Ediacaran organism Aspidella

  † Aspidella – tentative report
  • † Aspidella terranovica
• † Atrypa
  • † Atrypa reticularis
• † Aviculopecten
  • † Aviculopecten occidentalis – or unidentified comparable form
• † Bimuria
• † Bolbolenellus
• † Bristolia
• † Bumastus
• † Calymene
• † Camarotoechia – tentative report
• † Carolinites
• † Chonetes
• † Cleiothyridina
• † Composita
  • † Composita grandis – or unidentified comparable form
  • † Composita subtilita – or unidentified comparable form
• † Conchidium
• † Conocardium

• 

  Fossil of the Devonian-Triassic arthropod trackway ichnogenus Cruziana

  † Cruziana
• † Cyclolobus
• † Cyclonema
• † Cymbidium
• † Daguinaspis
• † Dicoelosia
• † Didymograptus
• † Dimeropygiella
• † Diplichnites
• † Encrinurus
• † Endoceras – tentative report
• † Euomphalus
• † Fallotaspis
• † Favosites
• † Fenestella
• † Gogia
• † Halysites
• † Helicoplacus

• 

  Life restoration of the Permian Chimaera relative Helicoprion

  † Helicoprion
  • † Helicoprion davisii
• † Heliomeroides
• † Hercynella
• † Holopea
• † Hyolithes
• † Illaenus
• † Ingria
• † Isogramma
• † Isotelus
• † Kawina

• 

  Illustration of a fossilized shell of the brachiopod Kutorgina

  † Kutorgina
• † Lingula
• † Lingulella
• † Lithostrotion
  • † Lithostrotion pauciradiale
• † Lonchodomas
• † Meristella
• † Micromitra
• † Murchisonia
• † Neospirifer
• † Nephrolenellus
• † Nevadella
• † Obolella

• 

  Illustration of a fossil of the Cambrian trilobite Olenellus

  † Olenellus
  • † Olenellus fowleri – or unidentified comparable form
• † Oryctocephalus
  • † Oryctocephalus indicus
• † Paladin
• Palaeoaplysina
• † Paleochiton
• † Parafusulina
• † Paraschwagerina
• † Peachella

• 

  Fossilized shell of the Silurian-Middle Devonian brachiopod Pentamerus

  † Pentamerus
• † Phillipsia
• † Phyllograptus
• † Plaesiomys
• † Planolites
• † Platyceras
• † Poleumita
• † Proetus
• † Pteridinium – tentative report
• † Raymondaspis
• † Remopleurides
• † Repinaella

• 

  Fossil of the arthropod burrow ichnogenus Rusophycus

  † Rusophycus
• † Schwagerina
• † Skenidioides
• † Spirifer
  • † Spirifer brazerianus
• † Spiriferina – tentative report
• † Stearoceras
• † Streptosolen
• † Stylonema
• † Swartpuntia – or unidentified comparable form
• † Syringopora
• † Thompsonella
• † Trinodus
• † Trocholites – tentative report
• † Volborthella
• † Wanneria

• 

  Fossilized shells of the ammonoid cephalopod Xenodiscus

  † Xenodiscus
• † Zacanthoides

Mesozoic

Main article: List of the Mesozoic life of California

Selected Mesozoic taxa of California

• † Abyssochrysos – tentative report
• † Acanthoceras
• Acanthosphaera – tentative report
• Acesta
• † Acrioceras
• † Acrodus
  • † Acrodus wempliae – type locality for species
• † Acteon
• † Acteonella

• 

  Life restoration of the Late Cretaceous armored dinosaur Aletopelta

  † Aletopelta – type locality for genus
  • † Aletopelta coombsi – type locality for species
• Amauropsis
• † Ampullina
• † Anagaudryceras
  • † Anagaudryceras sacya – or unidentified comparable form
• † Anahamulina
• † Anasibirites
  • † Anasibirites kingianus – type locality for species
• † Anatomites
• † Anatropites
• † Anisoceras

• 

  Interior and exterior of a shell of an Anomia , or jingle shell

  † Anomia
• † Anoplophora – tentative report
• † Aphaea
• † Aphrosaurus
  • † Aphrosaurus furlongi
• Aporrhais
• Architectonica – tentative report
• Arctica
• † Arctoceras
• Argyrotheca
• † Arnioceras
• † Arpadites
• Arrhoges
• † Aspenites – type locality for genus
• Astarte
• † Asteroceras
• † Atira

• 

  Fossilized partial skull of the Late Cretaceous duck-billed dinosaur Augustynolophus

  † Augustynolophus
  • † Augustynolophus morrisi
• † Axonoceras
• † Bacchites
• † Baculites
  • † Baculites capensis
  • † Baculites yokoyamai – or unidentified comparable form
• Barbatia
• † Barrettia
• † Basilemys
• † Belleza
• Bernaya
• † Beudanticeras
• † Bochianites
• † Bostrychoceras
• † Brancoceras
• Bulimulus
• Bullaria
• Bullina
• † Californites – type locality for genus

• 

  Restoration of the Late Triassic ichthyosaur Californosaurus

  † Californosaurus
• Callianassa – tentative report
• † Calliconites
• † Calliomphalus – tentative report
• Callista – tentative report
• † Calva
• † Calycoceras
• Cancellaria – tentative report
• Cantharus
• Capulus – or unidentified comparable form
• Cardinia
• Cardita
• † Cecrops
• Cerithidea
• Cerithium
• † Cidarina

• 

  Shell and spines of a Cidaris sea urchin

  Cidaris
• † Clinura
• † Collignoniceras
• † Collonia
• Corbicula
• Corbula
• Cornutella
• † Cosmonautilus
• † Crioceratites
• Cucullaea
• † Cunningtoniceras
• † Cyclothyris
• Cylichna
• † Cylindroteuthis
• † Cymatoceras

• 

  Diagram illustrating the Middle-Late Triassic ichthyosaur Cymbospondylus with an anachronistic human to scale.

  † Cymbospondylus
  • † Cymbospondylus petrinus
• † Daonella – tentative report
  • † Daonella dubia
• † Dentalium
• † Desmoceras
• † Desmophyllites
• † Dictyoconites
• † Didymoceras
  • † Didymoceras hornbyense – or unidentified comparable form
• † Dieneria – type locality for genus
• † Discohelix – tentative report
• † Discoscaphites
• † Douvilleiceras
• † Durania
• † Echinocorys
• † Elimia

• 

  Restoration of the Early Cretaceous-Eocene bony fish Enchodus , or the "saber-toothed herring"

  † Enchodus
• † Entobia
• † Eriphyla
• † Eucalycoceras
• † Euclastes
• † Euomphaloceras
• † Eupachydiscus
• † Euspira
• † Eutrephoceras
• † Exiteloceras
• † Exogyra

• 

  Fossilized shell of the Late Cretaceous ammonoid cephalopod Fagesia

  † Fagesia
• Fissurella – tentative report
• † Flabellina
• † Flabellum
• † Fresnosaurus – type locality for genus
  • † Fresnosaurus drescheri – type locality for species
• Gastrochaena – tentative report
• † Gaudryceras
• † Gervillia
• Glans – tentative report
• † Glauconia
• † Globigerinelloides
• Glossus
• Glycymeris
• † Goricanites – type locality for genus

• 

  Fossil negative with skin impressions of the theropod dinosaur footprint ichnogenus Grallator

  † Grallator
• † Gryphaea
• † Gryponautilus
• Gyroidina
• Haliotis
• † Hauericeras
• † Hecticoceras
• † Hedenstroemia
• † Helena
• † Hemicidaris
• Heptranchias
• Hipponix
• † Homerites
• † Hybodus
• † Hydrotherosaurus – type locality for genus
  • † Hydrotherosaurus alexandrae – type locality for species
• † Hypophylloceras
• † Ichthyornis
• † Ichthyosaurus

• 

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

  † Inoceramus
  • † Inoceramus balticus
  • † Inoceramus cordiformis – or unidentified comparable form
  • † Inoceramus incertus – or unidentified comparable form
  • † Inoceramus naumanni
  • † Inoceramus steinmanni – or unidentified comparable form
  • † Inoceramus subundatus
  • † Inoceramus teshioensis – or unidentified comparable form
  • † Inoceramus turgidus – type locality for species
• † Inyoites – type locality for genus
  • † Inyoites oweni – type locality for species
• Isognomon

• 

  Fossilized shells of the Jurassic brachiopod Kallirhynchia

  † Kallirhynchia
• † Kilianella
• † Kossmaticeras
• † Lacunaria
• Leda – tentative report
• Lima
• † Linearis
• † Lingula
• Lithophaga
• Lopha
• † Loxo
• † Lucina
• † Lysis
• † Lytoceras
  • † Lytoceras batesi
• Macrocallista
• † Macrocephalites
• † Mammites – tentative report
• † Mantelliceras
• Margarella
• Margarites

• 

  Fossilized shell of the Early-Late Cretaceous ammonoid cephalopod Mariella

  † Mariella
• Martesia
• † Mediaster
• † Meekoceras
  • † Meekoceras gracilitatis
• † Melchiorites
• † Menuites
• † Merriamia
• † Mita – tentative report
• † Mita
• † Modiolus
• † Morenosaurus – type locality for genus
  • † Morenosaurus stocki – type locality for species
• † Mortoniceras
• Musculus – or unidentified related form
• † Myophorella
  • † Myophorella argo
  • † Myophorella dawsoni – or unidentified related form
  • † Myophorella yellowstonensis
• † Myophoria
• † Mytilus
• Natica
• † Navahopus

• 

  Life restoration of the Late Triassic thalattosaurs Nectosaurus (right) and Thalattosaurus

  † Nectosaurus
• † Neithea
• † Neocardioceras – tentative report
• † Neohibolites
• † Neophylloceras
  • † Neophylloceras hetonaiense
  • † Neophylloceras ramosum
• † Nerinea
• Nerita
• † Nolita
• † Nostoceras
  • † Nostoceras splendidum
• Nucula
• Opalia
• † Ophiceras
• † Opis
• † Orthoceras

• 

  Shell of an Ostrea , or oyster

  Ostrea
• † Owenites
  • † Owenites carpenteri
  • † Owenites koeneni – type locality for species
• † Oxynautilus
• † Oxytoma
• † Pachydesmoceras
  • † Pachydesmoceras pachydiscoide – type locality for species
• † Pachydiscus
  • † Pachydiscus ootacodensis
• Panopea

• 

  Fossilized shell of the Late Cretaceous ammonoid cephalopod Parapuzosia with a human indicating its size

  † Parapuzosia
• Patella – report made of unidentified related form or using admittedly obsolete nomenclature
• † Pecten
• †Pedalion
• † Pentzia
• † Peroniceras
• Phanerolepida
• Pholadomya
• † Phylloceras
• † Phyllopachyceras
• † Pinna
• † Plesiotylosaurus
  • † Plesiotylosaurus crassidens
• Plicatula

• 

  Life restoration of the Late Cretaceous mosasaur Plotosaurus

  † Plotosaurus
  • † Plotosaurus bennisoni
  • † Plotosaurus tuckeri
• Polinices
• † Polycyclus
• † Polyptychites
• † Polyptychoceras
• † Posidonia
• † Potamides – tentative report
• † Proclydonautilus
• † Prognathodon
  • † Prognathodon waiparaensis – or unidentified comparable form

• 

  Fossilized shells of the Triassic-modern marine bivalve Propeamussium

  Propeamussium
• † Protocardia
• † Protrachyceras
• † Pseudomelania
• † Pseudoperna
• † Pseudothurmannia – tentative report
• † Pteraichnus
• † Pterotrigonia
• † Puzosia
• Pycnodonte
• Quadrans – tentative report
• Retusa
• † Rhaetina – tentative report
• † Rhynchonella
• Rogerella
• † Romaniceras
• † Scalarites
• † Scapanorhynchus
• Scaphander
• † Scaphites
  • † Scaphites hippocrepis – or unidentified related form
• † Senis

• 

  Base of the trunk of a living Sequoia tree with a human to scale

  † Sequoia
• Serpula
• † Shastasaurus
  • † Shastasaurus alexandrae
  • † Shastasaurus pacificus
• † Shastoceras
• Siphonalia
• † Sirenites
• † Skolithos
• Solariella
• Solemya – tentative report
• Solen
• † Spiriferina – report made of unidentified related form or using admittedly obsolete nomenclature
  • † Spiriferina coreyi – type locality for species
• Spondylus
• Squalicorax
• † Sturia
• † Suna
• † Tegula
• Tellina
• † Tenea
• Terebralia – tentative report
• † Tessarolax

• 

  Reconstructive illustration of the skull in side (above) and top view of the Late Triassic thalattosaur Thalattosaurus . The frontmost portion of the snout is portrayed erroneously as straight; it actually had a pronounced downward curve

  † Thalattosaurus
• Thyasira
• † Tollia
• † Tragodesmoceras
• † Trigonia
• † Trinacria
• † Trochactaeon
• Trophon
• † Turrilites
  • † Turrilites acutus
  • † Turrilites costatus – or unidentified comparable form
• Turritella
• Volsella
• † Worthenia
• † Wyomingites
• † Yezoites

• 

  Shell of a Yoldia limatula , or file yoldia

  Yoldia
• † Zanola
• † Zealandites

Cenozoic

Main article: List of the Cenozoic life of California

Selected Cenozoic taxa of California

• † Abantis

• 

  A living Abies , or fir tree

  Abies
• † Aboma
• † Acalypha
• Acanthina
  • † Acanthina spirata
• Acanthocardia
• Acar
• Accipiter
  • † Accipiter velox
• Acentrophryne
• Acer
• Acesta
• Acipenser
  • † Acipenser medirostris – or unidentified comparable form
• Acmaea
  • † Acmaea mitra

• 

  Mounted fossilized skeleton of the Miocene horse Acritohippus

  † Acritohippus
  • † Acritohippus isonesus – or unidentified comparable form
• Acteocina
• Acteon
• Actinemys
  • † Actinemys marmorata
• Admete
  • † Admete rhyssa
• Adula
• Aechmophorus
  • † Aechmophorus occidentalis
• † Aelurodon

• 

  Life restoration of the Miocene camel Aepycamelus , or the long-necked camel. Heinrich Harder (1920).

  † Aepycamelus
  • † Aepycamelus alexandrae
• Aequipecten
• Aesopus
• Aethia
• Agaronia
• Agelaius
• † Agriotherium
• † Ailanthus
• Akera
• Alaba
• Alabina
• † Albicetus
• Alca
• † Alcodes
• Aleochara
• Aletes
• † Aletomeryx
• † Alforjas
• † Alisea – type locality for genus
• † Allodelphis – type locality for genus
  • † Allodelphis pratti – type locality for species

• 

  Fossilized skeleton of the Miocene seal Allodesmus

  † Allodesmus
  • † Allodesmus kernensis
• Alnus
• † Alopecocyon – type locality for genus
• Alopias
  • † Alopias vulpinus – or unidentified comparable form
• Alvania
• Amara
  • † Amara insignis
• Amauropsis
• Amelanchier
• Ammospermophilus
• † Amorpha
• † Amphicyon
  • † Amphicyon ingens

• 

  Fossilized skull of the Miocene saber-toothed cat Amphimachairodus

  † Amphimachairodus
• Amphissa
  • † Amphissa versicolor
• Amphiura
• † Amphora
• † Ampullina
• Amusium
• Anachis
• Anadara
• Anas
  • † Anas americana
  • † Anas clypeata
  • † Anas platyrhynchos
• † Anchitheriomys – or unidentified comparable form

• 

  Fossilized mandibles of the Miocene three-toed horse Anchitherium

  † Anchitherium
• Ancilla
• Angulus
• Anniella
• Anodontia
• Anomia
• † Ansen
• Anser
  • † Anser albifrons
• Antigona
• †Antilla
• Antilocapra
• Antrozous
  • † Antrozous pallidus
• Aphelocoma
  • † Aphelocoma californica

• 

  Reconstructive illustration of the skeleton of the Miocene-Pleistocene hornless rhinoceros Aphelops

  † Aphelops
• Apiotoma
• Aplodontia
  • † Aplodontia rufa
• Aquila
  • † Aquila chrysaetos
• † Araeosteus
  • † Araeosteus rothi
• Arbutus
• Arca
• † Arceuthobium
• † Archaeocyon
• † Archaeohippus
• Architectonica
• Archoplites
  • † Archoplites interruptus
• Arcinella
• Arctica – tentative report
• Arctocephalus

• 

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

  † Arctodus
  • † Arctodus simus – type locality for species
• † Arctostaphylos
• Ardea
  • † Ardea herodias
• Arenaria
  • † Arenaria melanocephala
• Arene
• † Argenna
• Argobuccinum
• Argopecten

  • 

    Shells of Argopecten gibbus , or Atlantic calico scallops

    † Argopecten gibbus
  • † Argopecten purpuratus
• Argyropelecus
• † Artocarpus
• Asio
  • † Asio wilsonianus
• Astraea
  • † Astraea undosa
• Astrangia
• Astropecten
• Astyris
• Athene
  • † Athene cunicularia
• Athleta
• † Atocetus
  • † Atocetus nasalis – type locality for species
• Atrina
• † Aturia
• Atys

• 

  Life restoration of the Miocene sperm whale Aulophyseter

  † Aulophyseter – type locality for genus
• Austrotrophon
• † Avipeda
• Aythya
  • † Aythya affinis
  • † Aythya valisineria
• Baiomys
• Balaenoptera
  • † Balaenoptera physalus
  • † Balaenoptera ryani

• 

  Mounted fossilized skeleton of the Pliocene whale Balaenula

  † Balaenula
• Balanophyllia
  • † Balanophyllia elegans
• Balanus
  • † Balanus crenatus
  • † Balanus nubilus – or unidentified comparable form
• Bankia
• Barbarofusus
• Barbatia

• 

  Fossilized skull of the Miocene-Pliocene false saber-toothed cat Barbourofelis

  † Barbourofelis
  • † Barbourofelis whitfordi
• Barleeia
• Barnea
• † Basirepomys
• Bassariscus
  • † Bassariscus astutus – or unidentified comparable form
• † Bathylagus – type locality for genus
• Bathytoma
  • † Bathytoma pacifica
• † Batodonoides
• Bembidion
• † Benoistia
• Beringraja
  • † Beringraja binoculata – or unidentified comparable form
• Betula
• Bison
  • † Bison antiquus

  • 

    Mounted fossilized skeleton of the Pleistocene Bison latifrons , also known as the giant bison or long-horned bison

    † Bison latifrons
• Bittium
  • † Bittium alternatum – or unidentified comparable form
• Bivetopsia
• † Boavus
• † Bolbocara
• Bolinichthys
• Bonasa
  • † Bonasa umbellus
• † Bonellitia
• † Borophagus
  • † Borophagus diversidens
  • † Borophagus littoralis – type locality for species
  • † Borophagus parvus
  • † Borophagus secundus
• † Borophryne
  • † Borophryne apogon
• Brachidontes

• 

  Restorative portrait of the Miocene oreodont mammal Brachycrus

  † Brachycrus
• † Brachypsalis
• Brachyramphus
• Branta
  • † Branta canadensis
  • † Branta nigricans – tentative report
• Bubo
  • † Bubo virginianus
• Buccinum
  • † Buccinum strigillatum
• Bucephala
  • † Bucephala albeola
• † Bucida
• Bufo
• Bulla
  • † Bulla gouldiana
  • † Bulla striata
• Bullia
• † Bumelia
• Bursa
• Buteo
  • † Buteo borealis

  • 

    A living Buteo jamaicensis , or red-tailed hawk

    † Buteo jamaicensis
  • † Buteo swainsoni
• Cadulus
• Caecum
• † Calicovatellus – type locality for genus
  • † Calicovatellus petrodytes – type locality for species
• Calidris
  • † Calidris alba
• Californiconus
  • † Californiconus californicus
• Calliostoma

  • 

    A living Calliostoma annulatum , or purple-ring top sea snail

    † Calliostoma annulatum
  • † Calliostoma canaliculatum
  • † Calliostoma gemmulatum
  • † Calliostoma ligatum
  • † Calliostoma supragranosum
  • † Calliostoma tricolor
• Callista
• Callorhinus
  • † Callorhinus ursinus
• Calosoma
  • † Calosoma semilaeve
• Calyptraea
• † Calyptranthes

• 

  Life restoration of the Pliocene-Holocene camel Camelops

  † Camelops
  • † Camelops hesternus
  • † Camelops minidokae
• Campanile
• Camponotus – type locality for genus
  • † Camponotus festinatus – type locality for species
• † Canarium
• Cancellaria
  • † Cancellaria obesa
• Cancer
• Canis
  • † Canis dirus
  • † Canis edwardii
  • † Canis latrans
  • † Canis lepophagus
  • † Canis lupus
  • † Canis rufus
• Canthon
  • † Canthon praticola
  • † Canthon simplex
• † Cantius
• † Capromeryx

  • 

    Fossilized skeleton of the Pleistocene dwarf pronghorn Capromeryx

    † Capromeryx minor
• Caracara
  • † Caracara cheriway
  • † Caracara plancus
• Carcharhinus
• Carcharias
• Carcharodon
  • † Carcharodon carcharias
  • † Carcharodon hastalis
• Carpelimus
• † Carpocyon
• Carya
• Caryophyllia
• Cassidulina
• Castanea
• Castanopsis
• Castor
  • † Castor californicus – or unidentified comparable form
• Cathartes

  • 

    A living Cathartes aura , or turkey vulture

    † Cathartes aura
• Catoptrophorus
  • † Catoptrophorus semipalmatus
• † Catostomus
• Ceanothus
• Cedrela
• † Celastrus
• Celtis
• Cepphus
  • † Cepphus columba
• Cercidiphyllum
• † Cercocarpus
• Cerithidea
  • † Cerithidea californica
• Cerithiopsis
• Cerithium
• † Cernina
• † Cerorhinca
• Cervus
  • † Cervus elaphus
• Cetorhinus
  • † Cetorhinus maximus

• 

  Life restoration of the Miocene-Pliocene whale Cetotherium

  † Cetotherium
• † Chaenophryne
• Chaetodipus
  • † Chaetodipus formosus – or unidentified comparable form
• † Chalcidichthys – type locality for genus
• Chama
• † Chamaecyparis
• Charadrius
  • † Charadrius semipalmatus
• Chauliodus – type locality for genus
• Chelonia
• Chen
  • † Chen caerulescens

• 

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

  † Chendytes – type locality for genus
  • † Chendytes lawi – type locality for species
• Chione
  • † Chione californiensis
• Chlamys
  • † Chlamys hastata
  • † Chlamys rubida
  • † Chlamys swifti
• Chlorostoma
• † Chorizanthe
• † Chrysobalanus
• † Chrysocyon
• † Chrysodomus – report made of unidentified related form or using admittedly obsolete nomenclature
• † Chrysolepis
• Cibicides
• Cicindela
  • † Cicindela oregona

• 

  Shell and spines of a Cidaris sea urchin

  Cidaris
• Cinnamomum
• Cissus
• † Citellus
• Citharichthys
  • † Citharichthys stigmaeus
• Clathrodrillia
• Clathurella
• Clavilithes
• Clavus
• Clementia
• Clethrionomys
• Cletocamptus

• 

  Shell of a Clinocardium cockle

  Clinocardium
  • † Clinocardium nuttallii
• Cliona
• Clupea
• Clypeaster
• Cnemidophorus
• † Cocconeis
• Cochliomyia – type locality for genus
  • † Cochliomyia macellaria – type locality for species
• Codakia
• Colaptes
• † Colodon
• Coluber
  • † Coluber constrictor
• Colubraria
• Columba – or unidentified comparable form
  • † Columba fasciata
• Columbarium
• † Conasprelloides
• Concavus

• 

  Fossilized shell of a Conus cone snail

  Conus
  • † Conus fergusoni
  • † Conus regularis
  • † Conus scalaris
• † Cophocetus – tentative report
• Copris
• Coragyps
• Corbicula
• Corbula
• † Cormohipparion
• Cornus
• Coronula – tentative report
• Corvus
  • † Corvus brachyrhynchos
  • † Corvus corax
• † Cosoryx

• 

  Restoration of the Miocene palaeomerycid Cranioceras , a relative of modern deer, with anachronistic human to scale

  † Cranioceras
• Crassadoma
  • † Crassadoma gigantea
• Crassispira
  • † Crassispira montereyensis – or unidentified related form
• Crassostrea
  • † Crassostrea ashleyi
  • † Crassostrea titan
• Crataegus
• Crawfordina
• Crepidula
  • † Crepidula adunca
  • † Crepidula onyx
• Crepipatella
  • † Crepipatella lingulata
• † Crommium
• Crossata
  • † Crossata ventricosa
• Crotalus

  • 

    A living Crotalus viridis , or prairie rattlesnake

    † Crotalus viridis
• Crucibulum
  • † Crucibulum spinosum
• † Cryptocarya
• Cryptonatica
  • † Cryptonatica affinis
• Cryptotermes
• Cryptotis
• Cucullaea
• Culicoides
• Cumingia
• † Cupania
• † Cupressus
  • † Cupressus goveniana
• Cuspidaria
• † Cuyamacamelus
• Cyanocitta
  • † Cyanocitta stelleri
• Cybocephalus
  • † Cybocephalus californicus – or unidentified comparable form
• Cyclammina
• Cyclocardia

• 

  Illustration of a living Cyclothone bristlemouth

  Cyclothone
• Cygnus
  • † Cygnus columbianus
• Cylichna
• Cymatium
• Cymatogaster
  • † Cymatogaster aggregata
• † Cynarctoides
  • † Cynarctoides acridens
• † Cynarctus

• 

  Fossilized cranium of the Miocene bear-dog Cynelos

  † Cynelos
• Cynoscion
• Cyperus
• Cypraea
• Cyrtonyx
• Cystiscus
• Cythara
• Cytherea
• † Dalbergia
• † Daphoenodon – or unidentified comparable form

• 

  Mounted fossilized skeleton of the Eocene-Miocene bear-dog Daphoenus

  † Daphoenus
  • † Daphoenus ruber – type locality for species
• Dardanus
  • † Dardanus arrosor
• Dasyatis
• Dasyhelea
• † Decapterus
• Deltochilum – tentative report
• Dendragapus
  • † Dendragapus fuliginosus
  • † Dendragapus obscurus
• Dendraster

  • 

    A living Dendraster excentricus , or sea cake

    † Dendraster excentricus
• Dendrophyllia
• Dendryphantes
• Dentalium
  • † Dentalium neohexagonum
• Dermochelys – or unidentified related form
• Deroceras
• † Desmatippus
• † Desmatochoerus
• † Desmocyon
• † Desmodium

• 

  Life restoration of the Oligocene-Miocene herbivorous marine mammal Desmostylus

  † Desmostylus
  • † Desmostylus hesperus – type locality for species
• Diacria
• † Diceratherium
• Dichocoenia
• † Dinohippus
• † Dinohyus
  • † Dinohyus hollandi
• Diodora
  • † Diodora arnoldi
  • † Diodora aspera
  • † Diodora inaequalis
• Diomedea
• † Diospyros
• Diploria
• Dipodomys
  • † Dipodomys agilis – or unidentified comparable form
  • † Dipodomys compactus
  • † Dipodomys deserti – or unidentified comparable form
  • † Dipodomys heermanni – or unidentified comparable form

  • 

    A living Dipodomys merriami , or Merriam's kangaroo rat

    † Dipodomys merriami
  • † Dipodomys ordii
• † Dipoides
• † Diprionomys
• Discinisca
• † Discohelix
• † Dissacus
• Distorsio
• † Domnina
• Donax
  • † Donax gouldii
• Dosinia
  • † Dosinia dunkeri
• † Drimys – type locality for genus
• † Dromomeryx

• 

  Illustration of the fossilized jaws and teeth of the Eocene brontothere mammal Duchesneodus

  † Duchesneodus
• † Dusisiren
• Dytiscus
• Echinarachnius
• Echinorhinus
• Eclipes – type locality for genus
• † Ectasis – type locality for genus
• † Ectopistes
  • † Ectopistes migratorius
• Eleodes
  • † Eleodes osculans – type locality for species
• Elgaria
  • † Elgaria multicarinata

• 

  Life restoration of two of the Eocene-Oligocene anthracothere mammal Elomeryx being menaced by fellow-anthracothere Anthracotherium

  † Elomeryx
• † Enaliarctos
  • † Enaliarctos mealsi
  • † Enaliarctos mitchelli
• † Enallagma – type locality for genus
• Engelhardtia
• Engina
• Enhydra
  • † Enhydra lutris
  • † Enhydritherium terraenovae
• Ensis
• Entomobrya
• † Eomellivora

• 

  Fossilized skeleton of the Eocene-Pliocene frog Eopelobates

  † Eopelobates
• † Eosurcula
• † Epicyon
  • † Epicyon haydeni
• † Epihippus
• Epinephelus
• † Epiphragmophora
• Epitonium
• Eptesicus
  • † Eptesicus fuscus – or unidentified comparable form
• † Equisetum
• Equus
  • † Equus idahoensi

  • 

    Restoration of the Pliocene-Holocene horse Equus scotti , or Scott's horse

    † Equus scotti
  • † Equus simplicidens
• Eremophila
  • † Eremophila alpestris
• Erethizon
  • † Erethizon dorsatum
• † Eriquius
• Eschrichtius
  • † Eschrichtius robustus – or unidentified comparable form
• † Etringus
• Eubalaena – or unidentified comparable form
• † Eucastor

• 

  Life restoration of the Pleistocene bovid Euceratherium , or the shrub ox. Robert Bruce Horsfall (1913).

  † Euceratherium – type locality for genus
  • † Euceratherium collinum – type locality for species
• † Eucyon
  • † Eucyon davisi
• Euleptorhamphus
• Eumetopias
• † Euoplocyon
• Euphagus
  • † Euphagus cyanocephalus
• Euscelis
• Eusmilia
• Euspira
  • † Euspira lewisii
• Eutamias
• † Eutrephoceras
• Euvola
• † Evesthes
• † Exilia
• Falco

  • 

    A living Falco peregrinus , or peregrine falcon

    † Falco peregrinus
  • † Falco sparverius
• Felis
• † Ficopsis
• Ficus
• Fimbria
• Fissurella
  • † Fissurella volcano
• Flabellipecten
• Flabellum
• † Forestiera
• Forreria
  • † Forreria belcheri
• † Fragilaria
• Fratercula

  • 

    A living Fratercula cirrhata , or tufted puffin

    † Fratercula cirrhata
  • † Fratercula dowi – type locality for species
• † Fraxinus
• Fulgoraria
• † Fulica
  • † Fulica americana
• Fulmarus
  • † Fulmarus glacialis
• Fusinus
  • † Fusinus barbarensis
  • † Fusinus luteopictus

• 

  A living Galeocerdo cuvier , or tiger shark

  Galeocerdo
  • † Galeocerdo aduncus
• Galeodea
• Galeorhinus
• † Ganolytes
• Gari
• Gasterosteus
  • † Gasterosteus aculeatus
• Gastrochaena
• Gavia
  • † Gavia arctica

  • 

    A living Gavia immer , or common loon

    † Gavia immer
  • † Gavia pacifica
  • † Gavia stellata
• Gemmula
• Genota
• Genyonemus
  • † Genyonemus lineatus
• Geochelone
• † Geococcyx

  • 

    A living Geococcyx californianus , or greater roadrunner

    † Geococcyx californianus
• Geomys
• Geranoaetus
• Gerrhonotus
• † Gila – tentative report
• † Gilbertia
• Glans
• Glaucidium
  • † Glaucidium gnoma
• Glebocarcinus
• Globigerina
  • † Globigerina bulloides
• Globularia
• Glossus
• Glycimeris
• Glycymeris
• Glyptoactis
• Glyptostrobus

• 

  Life restoration of the Miocene walrus Gomphotaria

  † Gomphotaria – type locality for genus
  • † Gomphotaria pugnax – type locality for species
• † Gomphotherium
• † Goniobasis – tentative report
• Goniopora
• Gopherus
  • † Gopherus agassizii
• †Gordonia
• Granulina
• Gymnogyps
  • † Gymnogyps californianus – type locality for species
• Gyroidina
• Haliaeetus
  • † Haliaeetus leucocephalus
• † Haliaetus
• Haminoea

• 

  Fossilized skull of the mesonychian mammal Harpagolestes

  † Harpagolestes – or unidentified comparable form
• Heloderma
• † Hemiauchenia
  • † Hemiauchenia macrocephala
• Hemipristis
  • † Hemipristis serra
• Hemitelia
• Hemitoma
• Here
• † Herpetocetus

• 

  Life restoration of the Eocene-Miocene mammal Herpetotherium

  † Herpetotherium
  • † Herpetotherium knighti – or unidentified comparable form
• Hespererato
  • † Hespererato columbella
• † Hesperocamelus – or unidentified comparable form
• Hesperomys
• † Hesperotestudo
• Heterodontus
• Hexagrammos
• Hexanchus
• Hiatella
  • † Hiatella arctica
• † Hiltonius

• 

  Life restoration of a herd of the Miocene-Pleistocene horse Hipparion . Heinrich Harder (1920).

  † Hipparion
  • † Hipparion forcei
• † Hippidion
• Hipponix
• † Hipponoe
• † Hippotherium
• Histrionicus
  • † Histrionicus histrionicus – tentative report
• Hodomys
• Homalopoma
• Homo
  • † Homo sapiens

• 

  Restoration of Pliocene-Pleistocene Homotherium , or scimitar cat

  † Homotherium
  • † Homotherium serum – or unidentified comparable form
• † Hoplophoneus
• † Hyaenodon
  • † Hyaenodon venturae
  • † Hyaenodon vetus – type locality for species
• Hyalina
• Hydrangea
• † Hydrodamalis
  • † Hydrodamalis cuestae – type locality for species
  • † Hydrodamalis gigas
• Hydrophilus
• Hyla
• † Hyopsodus – or unidentified comparable form
• † Hyperbaena
• † Hypertragulus
• † Hypohippus
• † Hypolagus
• † Hyrachyus
• † Ilingoceros

• 

  Restoration of the Miocene walrus Imagotaria

  † Imagotaria – type locality for genus
  • † Imagotaria downsi – type locality for species
• † Indarctos
• † Inga
• † Ioscion
• Ischnochiton
• † Ischyrocyon
• † Ischyromys
• Isognomon
• Isurus
  • † Isurus oxyrinchus
  • † Isurus planus
• Jaton
• † Julus
• † Juncus
• Juniperus
• Kelletia
  • † Kelletia kelletii
• Kellia

• 

  Life restoration of the Oligocene-Miocene dolphin Kentriodon

  † Kentriodon – type locality for genus
• † Keteleeria
• † Kingena
• Kurtzia
  • † Kurtzia arteaga
• Kurtziella
  • † Kurtziella plumbea
• † Labyrinthus
• Lacuna
  • † Lacuna porrecta
  • † Lacuna unifasciata
• † Lacunaria
• Laevicardium
  • † Laevicardium elatum
• Lagena
• Lamna
• Lampanyctus
• † Lampris – type locality for genus

  • 

    Life restoration of the Miocene opah fish Lampris zatima

    † Lampris zatima – type locality for species
• Lampropeltis
  • † Lampropeltis getulus
• Larus
  • † Larus californicus
  • † Larus delawarensis
  • † Larus glaucescens
  • † Larus philadelphia
• Latirus
• † Laytonia – type locality for genus
• Lechytia
• Leda
• Lepeta
• Lepidochitona
• Lepisosteus
  • † Lepisosteus spatula – or unidentified comparable form
• † Leptacanthichthys
  • † Leptacanthichthys gracilispinis

• 

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

  † Leptocyon
• † Leptomeryx
  • † Leptopecten latiauratus
• † Leptoreodon
• Lepus
  • † Lepus americanus
  • † Lepus californicus
  • † Lepus callotis
• Leukoma
  • † Leukoma staminea
• Lima
• Limaria

• 

  Top view of a fossilized skull of the Eocene creodont mammal Limnocyon

  † Limnocyon
• † Limosa
  • † Limosa fedoa
• Linga
• † Linophryne
  • † Linophryne indica
• † Liolithax – type locality for genus
• Liquidambar
• † Lirosceles
• Lirularia
  • † Lirularia lirulata
• Lissodelphis – or unidentified comparable form
• † Lithocarpus
• Lithophaga
• Lithophyllum

• 

  Life restoration of the Paleocene-Eocene bird Lithornis

  † Lithornis – or unidentified comparable form
• Lithothamnion
• Littorina
  • † Littorina scutulata
• † Lompoquia – type locality for genus
• Lontra
  • † Lontra canadensis
• † Lophar – type locality for genus
• † Lophocetus
• † Lophortyx
• † Lora
• Lottia
  • † Lottia limatula
  • † Lottia scabra
• Lucapinella
  • † Lucapinella callomarginata
• Lucina
• Luidia
• † Lycophocyon – type locality for genus
  • † Lycophocyon hutchisoni – type locality for species
• † Lygisma – type locality for genus
• Lygodium
• Lynx
  • † Lynx rufus
• Lyonsia
• Lyria

• 

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

  † Machairodus
• Macoma
  • † Macoma nasuta
• Macrarene
• Macrocallista
• † Macrodelphinus – type locality for genus
• Madrepora
• Magnolia
• Mahonia
• Makaira
• Malea
  • † Malea ringens
• Mallotus
• † Mammut
  • † Mammut americanum
  • † Mammut cosoensis
  • † Mammut matthewi
• † Mammuthus
  • † Mammuthus columbi

  • 

    Reconstructive illustration of the skeleton of a Mammuthus exilis , or pygmy mammoth

    † Mammuthus exilis
  • † Mammuthus primigenius
• † Mancalla – type locality for genus
  • † Mancalla californiensis – type locality for species
• † Mangelia
• Margarites
  • † Margarites pupillus
• Marginella
• Marmota
• Martes
• Martesia
• Maxwellia
  • † Maxwellia gemma
• † Mayena – tentative report
• † Mediochoerus
• † Megacamelus
• Megachasma
• Megachile
  • † Megachile gentilis
• † Megahippus

• 

  Mounted fossilized skeleton of the Miocene-Pleistocene ground sloth Megalonyx

  † Megalonyx
  • † Megalonyx jeffersonii
  • † Megalonyx wheatleyi
• Megalops – tentative report
• † Megapaloelodus
• Megaptera
• Megathura – tentative report
• † Megatylopus
• Melampus
• Melanella
• Melanitta
  • † Melanitta deglandi – tentative report
  • † Melanitta fusca
  • † Melanitta perspicillata
• Melanoplus
  • † Melanoplus differentialis
• Meleagris
• † Meliosma
• Melospiza
  • † Melospiza melodia
• † Meniscotherium

• 

  Life restoration of the Miocene rhinoceros Menoceras

  † Menoceras
• Mephitis
  • † Mephitis mephitis
• Meretrix
• Mergus
  • † Mergus serrator
• Merluccius
  • † Merluccius productus
• † Merriamoceros
• † Merychippus
• † Merychyus

• 

  Fossilized skeleton of the Miocene pronghorn Merycodus

  † Merycodus
• Mesalia
• † Mesocyon
• † Mesodma – tentative report
• † Mesohippus
• Mesophyllum
• † Mesoreodon
• † Metalopex
• † Metarhinus
• † Metatomarctus

• 

  Mounted fossilized skeleton of the Miocene-Pleistocene manatee relative Metaxytherium

  † Metaxytherium
• † Miacis
• † Michenia
• † Microcosmodon – or unidentified comparable form
• Microdipodops
• Microgadus – tentative report
• † Microsyops
• † Microtomarctus
• Microtus
  • † Microtus californicus
• † Miocryptorhopalum – type locality for genus
• † Miocyon
• † Miohippus
• † Miomancalla
• † Miotapirus
• † Miotylopus

• 

  Restoration of the Pliocene-Pleistocene Miracinonyx , or American cheetah

  † Miracinonyx
  • † Miracinonyx studeri – tentative report
• Mirounga
  • † Mirounga angustirostris – or unidentified comparable form
• Mitra
  • † Mitra fultoni
  • † Mitra idae
• Mitrella
  • † Mitrella carinata
• † Mixocetus – type locality for genus
• Modiolus
  • † Modiolus capax – or unidentified comparable form
• Modulus
• Monoplex
  • † Monoplex amictus
• † Monosaulax
• Montipora
• Mopalia
  • † Mopalia ciliata
• † Moropus
• Morula
• Morus – or unidentified comparable form
• Morus
• Mulinia
• Murex – or unidentified related form
• Musculus
• Mustela
  • † Mustela frenata
• † Mya
  • † Mya truncata
• Myctophum
• Myliobatis
  • † Myliobatis californicus

• 

  Fossilized skeleton of the Pliocene-Holocene peccary Mylohyus

  † Mylohyus
  • † Mylohyus fossilis
• † Mylopharodon
  • † Mylopharodon conocephalus
• Mytilus
  • † Mytilus californianus
  • † Mytilus edulis
• Myurella
• † Nannippus
• † Nannocetus – type locality for genus
• † Nanotragulus
• Narona
  • † Narona clavatula
• Nassa

• 

  A living Nassarius , or nassa mud snail

  Nassarius
  • † Nassarius fossatus
• Natica
• Naticarius
• † Navahoceros
• Nectandra
• Negaprion
• † Neobernaya
  • † Neobernaya spadicea
• † Neogyps
  • † Neogyps errans
• † Neohipparion
• † Neoliotomus – or unidentified comparable form
• † Neolitsea

• 

  Mounted fossilized skeleton of the Miocene aquatic desmostylian mammal Neoparadoxia

  † Neoparadoxia – type locality for genus
  • † Neoparadoxia cecilialina – type locality for species
  • † Neoparadoxia repenningi – type locality for species
• Neophrontops
  • † Neophrontops americanus
• † Neoplagiaulax
• Neotamias
  • † Neotamias senex
• † Neotherium – type locality for genus
• Neotoma
  • † Neotoma cinerea – type locality for species
  • † Neotoma fuscipes
  • † Neotoma lepida
• Neptunea
• Nerita
• Neritina
• † Nerium
• Neverita
• Nicrophorus
  • † Nicrophorus guttula
  • † Nicrophorus marginatus – type locality for species
  • † Nicrophorus nigrita
• † Nimravides

• 

  Illustration of the fossilized skull of the Oligocene false saber-toothed cat Nimravus

  † Nimravus
• Niso – tentative report
• † Nitzschia
• Nodipecten
  • † Nodipecten subnodosus
• Norrisia
  • † Norrisia norrisii
• † Nothrotheriops
• † Nothrotherium
• Notiosorex
  • † Notiosorex crawfordi
• Notoacmea

• 

  Illustration of a living Notorynchus cow shark

  Notorhynchus
• † Nototamias
• Nucella
  • † Nucella emarginata
  • † Nucella lamellosa
  • † Nucella lima
• Nucula
• Numenius

  • 

    A living Numenius phaeopus , or whimbrel

    † Numenius phaeopus
• Nuttallia
• † Nyssa
• Oceanodroma
  • † Oceanodroma furcata
  • † Oceanodroma homochroa
• Ocenebra
• Ocotea
• † Ocystias
• † Odaxosaurus
• Odobenus
  • † Odobenus rosmarus

• 

  Mounted fossilized skeleton of the Pleistocene Odocoileus lucasi , or American mountain deer

  Odocoileus
  • † Odocoileus hemionus
  • † Odocoileus virginianus – or unidentified comparable form
• Odontaspis
  • † Odontaspis ferox
• Odostomia
  • † Odostomia avellana
  • † Odostomia beringi – or unidentified comparable form
  • † Odostomia californica – or unidentified comparable form
  • † Odostomia callimene – or unidentified related form
  • † Odostomia columbiana – or unidentified comparable form

  • 

    Illustration of the shell of an Odostomia donilla pyram shell sea snail

    † Odostomia donilla
  • † Odostomia eugena
  • † Odostomia farallonensis
  • † Odostomia fetella
  • † Odostomia gravida
  • † Odostomia helena
  • † Odostomia minutissima – or unidentified comparable form
  • † Odostomia nemo
  • † Odostomia nota
  • † Odostomia stephensae
  • † Odostomia tenuisculpta – or unidentified comparable form
• Oenopota
  • † Oenopota tabulata
• Oliva
  • † Oliva spicata
• Olivella
  • † Olivella baetica
  • † Olivella biplicata
  • † Olivella gracilis
  • † Olivella pedroana
• Oncorhynchus

  • 

    Life restoration of a school of the Miocene-Pleistocene Oncorhynchus rastrosus , or saber-toothed salmon

    † Oncorhynchus rastrosus
• Ondatra
• Oneirodes
• Onthophagus
• Onychomys
  • † Onychomys torridus
• Ophiodermella
  • † Ophiodermella inermis
• † Opisthonema
• Oreamnos
  • † Oreamnos americanus
• Oreortyx
  • † Oreortyx picta
• Orthemis
  • † Orthemis ferruginea
• Orthodon
• † Osbornodon

• 

  Life restoration of the Miocene pseudo-toothed bird Osteodontornis

  † Osteodontornis – type locality for genus
  • † Osteodontornis orri – type locality for species
• Ostrea
  • † Ostrea conchaphila
  • † Ostrea lurida
• † Otodus
  • † Otodus megalodon
• Otus
  • † Otus asio
• Ovibos
  • † Ovibos moschatus
• Ovis
  • † Ovis canadensis
• † Oxyrhina
• † Oxyura
  • † Oxyura jamaicensis
• † Ozymandias – type locality for genus
• † Pacifichelys
• † Palaeolagus

• 

  Restoration of the Miocene aquatic desmostylian mammal Paleoparadoxia

  † Paleoparadoxia
  • † Paleoparadoxia tabatai
• Pandora
• Panopea
  • † Panopea abrupta
• Panthera
  • † Panthera leo
  • † Panthera onca – or unidentified comparable form
• † Parabalaenoptera – type locality for genus
  • † Parabalaenoptera baulinensis – type locality for species
• † Paracynarctus
• † Parahippus
• Paralichthys – type locality for genus

• 

  Fossilized skeleton of the Pliocene-Pleistocene ground sloth Paramylodon

  † Paramylodon
  • † Paramylodon harlani
• † Paramys
• † Parapontoporia
  • † Parapontoporia sternbergi – type locality for species
• † Parastylotermes
  • † Parastylotermes calico – type locality for species
  • † Parastylotermes frazieri – type locality for species
• † Paratomarctus
• † Parietobalaena
• † Paronychomys
• † Parribacus
• Patelloida
• Pecten
• †Pedalion
• † Pediomeryx
• † Pelagiarctos – type locality for genus
  • † Pelagiarctos thomasi – type locality for species

• 

  Reconstructive illustration of a fossilized skull of the Oligocene-Pleistocene pseudo-toothed bird Pelagornis , with close-up insets of its pseudo-teeth

  † Pelagornis
• Pelecanus
  • † Pelecanus erythrorhynchus – or unidentified comparable form
  • † Pelecanus occidentalis
• † Peltosaurus
• † Peraceras
• Perognathus
• Peromyscus
  • † Peromyscus truei – or unidentified comparable form
• † Perse
• Persea
• Persististrombus
• Petricola
• Phalacrocorax
  • † Phalacrocorax auritus
  • † Phalacrocorax pelagicus
  • † Phalacrocorax penicillatus
• Phalaropus
  • † Phalaropus fulicaria
  • † Phalaropus lobatus
• † Phanaeus

• 

  Illustration of a fossilized skull in multiple views of the Oligocene-Miocene bone-crushing dog Phlaocyon

  † Phlaocyon
• Phloeodes
  • † Phloeodes diabolicus
  • † Phloeodes plicatus
• † Phoberogale
• Phoca
  • † Phoca vitulina – or unidentified comparable form
• Phocoena – or unidentified comparable form
• † Phoebastria
  • † Phoebastria albatrus – type locality for species
• Phoenicopterus – or unidentified comparable form
• Pholadidea
• Pholadomya
• Pholas
• Phos
• † Photinia

• 

  A living Phrynosoma , or horned lizard

  Phrynosoma
• Phyllonotus
• Physa
• Picea
• Pinna
• Pinus
  • † Pinus muricata
  • † Pinus radiata
• Piranga
  • † Piranga ludoviciana
• Pitar
• Pituophis
  • † Pituophis melanoleucus
• Pitymys
• Platanus

• 

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

  † Platygonus
• Platynus
• Plegadis
  • † Plegadis chihi
• † Pleiolama
• † Plesiadapis
• † Plesiogulo
• Pleurofusia
• † Pleuroncodes
• † Pleuronichthys
• † Pliauchenia
• † Pliocyon
• † Pliohippus
• † Pliometanastes
• † Plionarctos

• 

  Life restoration of the Miocene walrus Pliopedia

  † Pliopedia – type locality for genus
  • † Pliopedia pacifica – type locality for species
• † Plithocyon
• Pluvialis
  • † Pluvialis squatarola
• † Poabromylus – tentative report
• Pocillopora
• Podiceps
  • † Podiceps auritus
• Podilymbus
  • † Podilymbus podiceps
• Pododesmus
  • † Pododesmus macrochisma
• † Poebrodon
  • † Poebrodon californicus – type locality for species

• 

  Illustration of a fossilized skull of the Oligocene false faber-toothed cat Pogonodon

  † Pogonodon
• Polinices
  • † Polinices lewisii
• Polydora
• Polymesoda
• Polystira
• † Pongamia
• † Pontolis – or unidentified comparable form
  • † Pontolis magnus
• Populus
• Porichthys

  • 

    A modern Porichthys notatus , or plainfin midshipman

    † Porichthys notatus
• Porites
• † Portunites
• † Potamides
• † Praemancalla – type locality for genus
• Priene
• Prionace
  • † Prionace glauca
• † Pristichampsus
• Pristiophorus
• † Procamelus
• † Procynodictis
• Procyon
  • † Procyon lotor
• † Promartes
• † Protanthias – type locality for genus
• † Protepicyon

• 

  Life restoration of the Eocene brontothere mammal Protitanops

  † Protitanops
• † Protohepialus – type locality for genus
  • † Protohepialus comstocki – type locality for species
• † Protolabis
• † Protomarctus
• † Protostrix
• Protothaca
• † Protylopus
• Prunus

• 

  Hypothetical restoration of the Oligocene-Pliocene sea turtle Psephophorus

  † Psephophorus
• † Pseudaelurus
• Pseudochama
• Pseudoliva
• Pseudomelatoma
  • † Pseudomelatoma penicillata
• † Pseudoseriola – type locality for genus
• † Pseudotsuga
• Pteria
• † Pteroplatea
• Pteropurpura
  • † Pteropurpura festiva
• Pterostichus
• Pterynotus

• 

  Illustration of a fossilized skull of the Paleocene multituberculate mammal Ptilodus

  † Ptilodus
• Ptinus
• Ptychoramphus
  • † Ptychoramphus aleuticus
• Puffinus
  • † Puffinus griseus
  • † Puffinus opisthomelas
  • † Puffinus tenuirostris
• † Puma
  • † Puma concolor – type locality for species
• Puncturella
  • † Puncturella galeata
• Purpura
• Pusula

• 

  Assemblage of fossilized shells of the Cretaceous-Pleistocene oyster Pycnodonte

  Pycnodonte
• Pyramidella
  • † Pyramidella adamsi – or unidentified comparable form
• Pyrene
• Quercus
• Raja
• Rallus
  • † Rallus limicola
• † Ramoceros
• † Raja
• Rallus
  • † Rallus limicola

• 

  Life restoration of the Miocene-Pliocene pronghorn Ramoceros and Cosoryx . Robert Bruce Horsfall (1913).

  † Ramoceros
• † Rana
• Rapana
• Recurvirostra
• Reithrodontomys
• † Repomys
• Reticulitermes
• Reticutriton
• Retusa
• † Rhabdammina
• † Rhamnidium
• † Rhamnus
• Rhus

• 

  Restoration of the Miocene-Pliocene elephant relative Rhynchotherium

  † Rhynchotherium
• † Rhythmias
• Rimella
• Rissa
  • † Rissa tridactyla
• Rissoina
• † Robinia
• † Rotularia
• Sabal
• Sagmatias
• Salix
• † Saniwa
  • † Saniwa ensidens – type locality for species
• † Sapindus
• † Sarda
• Sassia
• Saxidomus
  • † Saxidomus gigantea
  • † Saxidomus nuttalli

• 

  Fossilized teeth of the Neogene sperm whale Scaldicetus

  † Scaldicetus
• Scapanus
  • † Scapanus latimanus
• Scaphander
• Scapharca
• Scaphinotus
  • † Scaphinotus interruptus
• † Scaphohippus
• Sceloporus
  • † Sceloporus occidentalis
• † Schistomerus – type locality for genus
  • † Schistomerus californense – type locality for species
• Schizaster
• Sciurus
• Scomber
• † Scomberesox

• 

  Illustration of a living Scopelogadus ridgehead

  Scopelogadus
• † Scutella
• Scyliorhinus
• † Scymnorhinus
• † Sebastodes
• Seila
• Semele – tentative report
• Semele
• Semicassis
• Semicossyphus

• 

  Fossilized skull of the Pliocene porpoise Semirostrum

  † Semirostrum – type locality for genus
  • † Semirostrum ceruttii – type locality for species
• † Sequoiadendron
• † Serbelodon
• Serica
• Seriola
• Seriphus
  • † Seriphus politus
• Serpula
• Serpulorbis

• 

  Restoration of two species of the Oligocene oreodont mammal genus Sespia

  † Sespia
• Siderastrea
• Sigmodon
• Sigmoilina – tentative report
• Siliqua
  • † Siliqua patula – or unidentified related form
• Sinum
• Siphonalia
• Skenea
  • † Skenea californica
• † Smilax

• 

  Life restoration of the Pleistocene-Holocene saber-tooth cat Smilodon

  † Smilodon
  • † Smilodon fatalis
  • † Smilodon gracilis
• † Smilodonichthys
• Solariella
  • † Solariella peramabilis
• Solemya
• Solen
• Solenosteira
• Sorex
• Spermophilus

  • 

    A living Otospermophilus beecheyi (formerly Spermophilus beecheyi), or California ground squirrel

    † Spermophilus beecheyi
  • † Spermophilus lateralis
• Sphyrna
• Spilogale
  • † Spilogale putorius
• Spirotropis
• Spisula
• Spondylus
• Squalus
• Squatina
  • † Squatina californica – or unidentified comparable form
• Squilla

• 

  Mounted fossilized skeleton of the Pliocene-Pleistocene elephant relative Stegomastodon

  † Stegomastodon
  • † Stegomastodon mirificus – or unidentified comparable form
• Stenella
• † Stenomylus
  • † Stenomylus hitchcocki – or unidentified comparable form
• Stenoplax
  • † Stenoplax conspicua
• Stercorarius
• Sterna
• † Sternbergia – type locality for genus
• Sthenictis
• † Stictocarbo

• 

  Mounted fossilized skeleton of the fossil pronghorn Stockoceros

  † Stockoceros – or unidentified comparable form
• Stomias
• Stramonita
  • † Stramonita biserialis
  • † Stramonita canaliculata
• † Striatolamia
• Strioterebrum
• Strombiformis
• Strombus
  • † Strombus galeatus
  • † Strombus gracilior
• Strongylocentrotus
• † Strongylodon
• Sturnella

• 

  Mounted fossilized skeleton of the Eocene-Oligocene tortoise Stylemys

  † Stylemys
• Subcancilla
  • † Subcancilla sulcata
• † Subhyracodon
• Succinea
• Sula
• † Syllomus – or unidentified comparable form
• Sylvilagus
  • † Sylvilagus audubonii
  • † Sylvilagus bachmani
  • † Sylvilagus floridanus

• 

  A living Syngnathus pipefish

  Syngnathus
• Synthliboramphus
  • † Synthliboramphus antiquus
  • † Synthliboramphus hypoleucus
• † Tabernaemontana
• Tadorna
  • † Tadorna tadorna
• Tagelus
  • † Tagelus californianus
  • † Tagelus subteres
• Tamias
• Tamiasciurus
  • † Tamiasciurus hudsonicus
• † Tanymykter

• 

  A living Tapirus , or tapir

  Tapirus
  • † Tapirus californicus
  • † Tapirus merriami – type locality for species
• † Tapocyon
• Taranis
• Taricha
• Taxidea
  • † Taxidea taxus
• Tayassu
• Tegula
  • † Tegula aureotincta
  • † Tegula eiseni
  • † Tegula ligulata

• 

  Restoration of the Miocene-Pliocene rhinoceros Teleoceras

  † Teleoceras
• Tellina
• † Temnocyon
• Tenagodus
• † Teratornis
  • † Teratornis merriami
• Terebellum
• Terebra
  • † Terebra pedroana
  • † Terebra protexta
• Terebratula
• Teredo
• Terminalia
• † Tessarolax – tentative report
• Testudo
• † Tetraclaenodon
• † Tetrameryx
• Thais

• 

  Life restoration of the Miocene fur seal Thalassoleon

  † Thalassoleon
  • † Thalassoleon macnallyae – type locality for species
  • † Thalassoleon mexicanus
• † Thamnasteria
• Thamnophis
• Thomomys
  • † Thomomys bottae
  • † Thomomys monticola
• Thracia
• Thunnus – type locality for genus
• Thyasira
• † Thyrsites
• † Ticholeptus
• Timoclea

• 

  Mounted fossilized skeleton of the Miocene-Pleistocene camel Titanotylopus

  † Titanotylopus
• Tivela
  • † Tivela stultorum
• † Tomarctus
  • † Tomarctus brevirostris
  • † Tomarctus hippophaga
• Totanus
• † Toxicodendron
• Toxopneustes
  • † Toxopneustes roseus – or unidentified comparable form
• Toxostoma
  • † Toxostoma redivivum
• Trachycardium

• 

  A living Tremarctos , or spectacled bear

  Tremarctos
  • † Tremarctos floridanus
• Tresus
  • † Tresus capax
  • † Tresus nuttallii
• Triakis – tentative report
• Trichotropis
• Tricolia
  • † Tricolia pulloides
  • † Trigonictis macrodon
• Trionyx
• Triphora
• Triplofusus
  • † Triplofusus princeps
• Trochita
• † Trogosus
• Trophon
• Tucetona
  • † Tucetona multicostata
• † Tunita – type locality for genus
• Turbonilla
  • † Turbonilla aepynota
  • † Turbonilla almo
  • † Turbonilla asser
  • † Turbonilla canfieldi
  • † Turbonilla carpenteri
  • † Turbonilla laminata
  • † Turbonilla pentalopha
  • † Turbonilla raymondi
  • † Turbonilla regina
  • † Turbonilla stylina
  • † Turbonilla tenuicula
  • † Turbonilla torquata
  • † Turbonilla tridentata
  • † Turbonilla weldi

• 

  Shell of a Turcica sea snail

  Turcica
  • † Turcica caffea
• Turdus
• †Turio
• Turricula
• Turris
• Turritella
• Turritriton
  • † Turritriton gibbosus
• Tursiops – or unidentified comparable form
• Typha
• Typhis
• Tyto
  • † Tyto alba
• Uca

• 

  Life restoration of the Eocene mammal Uintatherium

  † Uintatherium
• Ulmus
• † Umbellularia
• Uria
  • † Uria aalge
• † Urobatis
  • † Urobatis halleri
• † Urocitellus
  • † Urocitellus beldingi
• Urocyon
  • † Urocyon cinereoargenteus
• Urolophus
  • † Urolophus halleri – tentative report
• Ursus

  • 

    A living Ursus americanus , or American black bear

    † Ursus americanus
• † Ustatochoerus
• Uta
  • † Uta stansburiana
• † Valenictus – type locality for genus
  • † Valenictus chulavistensis – type locality for species
  • † Valenictus imperialensis – type locality for species
• † Vanderhoofius
• Vasum
• † Vauquelinia
• † Velates
• Velutina
  • † Velutina velutina
• Venericardia
• Venus
• Vermicularia
• Veromessor

• 

  Leaves and fruit of a living Viburnum .

  † Viburnum
• † Vireo
• Vitrinella – tentative report
• Volsella
• Voluta
• Volutopsius
• † Vouapa
• Vulpes
  • † Vulpes cascadensis
  • † Vulpes velox
• Williamia
• † Wodnika

• 

  Fossilized shell of the Late Cretaceous-modern carrier shell sea snail Xenophora

  Xenophora
• † Xyne – type locality for genus
• Yoldia
  • † Yoldia cooperii
• † Yumaceras – tentative report
• † Zachrysia
• Zalophus
  • † Zalophus californianus
• † Zamites
• † Zaphleges
  • † Zaphleges longurio
• † Zapteryx
• † Zarhinocetus
  • † Zarhinocetus errabundus – type locality for species
• Zelkova
• Zenaida
  • † Zenaida macroura
• Zonotrichia
  • † Zonotrichia leucophrys

• 

  Known material diagram depicting the Miocene-Pleistocene mastodon relative Zygolophodon with a human to scale

  † Zygolophodon

References

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