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
Selected Paleozoic taxa of California †Advenella †Agathiceras †Ampyx – tentative report †Ampyx †Apatolichas †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 †Cruziana †Cyclolobus †Cyclonema †Cymbidium †Daguinaspis †Dicoelosia †Didymograptus †Dimeropygiella †Diplichnites †Encrinurus †Endoceras – tentative report †Euomphalus †Fallotaspis †Favosites †Fenestella †Gogia †Halysites †Helicoplacus †Helicoprion †Helicoprion davisii †Heliomeroides †Hercynella †Holopea †Hyolithes †Illaenus †Ingria †Isogramma †Isotelus †Kawina †Kutorgina †Lingula †Lingulella †Lithostrotion †Lithostrotion pauciradiale †Lonchodomas †Meristella †Micromitra †Murchisonia †Neospirifer †Nephrolenellus †Nevadella †Obolella †Olenellus †Olenellus fowleri – or unidentified comparable form †Oryctocephalus †Oryctocephalus indicus †Paladin Palaeoaplysina †Paleochiton †Parafusulina †Paraschwagerina †Peachella †Pentamerus †Phillipsia †Phyllograptus †Plaesiomys †Planolites †Platyceras †Poleumita †Proetus †Pteridinium – tentative report †Raymondaspis †Remopleurides †Repinaella †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 †Xenodiscus †Zacanthoides
Mesozoic
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