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

A

†Abantis †Abantis velifer Abies †Abies concoloroides †Abies klamathensis †Aboma †Aboma antiqua – type locality for species †Acalypha †Acalypha aequalis Acanthina †Acanthina spirata Acanthocardia †Acanthocardia brewerii – type locality for species †Acanthocardia sorrentoense Acar †Acar bailyi – or unidentified comparable form Accipiter †Accipiter velox Acentrophryne †Acentrophryne longidens Acer †Acer aequidentatum †Acer scottiae Acesta †Acesta multiradiata †Achaenodon †Achaenodon robustus – or unidentified comparable form Acila †Acila castrensis †Acila conradi †Acila decisa †Acila gabbiana †Acila muta †Acila semirostrata – or unidentified comparable form †Acila shumardi Acipenser †Acipenser medirostris – or unidentified comparable form Acmaea †Acmaea dickersoni – or unidentified related form †Acmaea digitalis – or unidentified comparable form †Acmaea insessa †Acmaea limatula †Acmaea mitra †Acmaea persona †Acmaea ruckmani – or unidentified comparable form †Acmaea tejonensis – or unidentified comparable form †Acritohippus †Acritohippus isonesus – or unidentified comparable form †Acritohippus quinni – type locality for species †Acritohippus stylodontus †Acritohippus tertius – or unidentified comparable form †Acritoparamys – or unidentified comparable form Acteocina †Acteocina culcitella †Acteocina inculta †Acteocina magdalensis Acteon †Acteon boulderanus †Acteon lawsoni †Acteon punctocaelatus †Acteon traski Actinemys †Actinemys marmorata †Acutostrea †Acutostrea idriaensis †Acutostrea miguelensis Admete †Admete rhyssa Adula †Adula californiensis †Adula diegensis Aechmophorus †Aechmophorus elasson †Aechmophorus occidentalis †Aechomophorus †Aechomophorus occidentalis †Aeila †Aeila decisa †Aelurodon †Aelurodon asthenostylus †Aelurodon taxoides †Aepycamelus †Aepycamelus alexandrae Aequipecten †Aequipecten andersoni Aesopus †Aesopus chrysalloides Aethia †Aethia barnesi – type locality for species †Aethia rossmoori – type locality for species †Aethomylos †Aethomylos simplicidens Agaronia †Agaronia mathewsoni – or unidentified comparable form †Agaronia mathewsonii – or unidentified comparable form †Agasoma †Agasoma acuminatum †Agasoma gravida †Agasoma gravidum †Agasoma kerrianum †Agasoma sinuata Agelaius †Agelaius phoeniceuus †Agriotherium †Ailanthus †Ailanthus lesquereuxi Akera †Akera maga Alaba †Alaba catalinensis †Alaba jeannettae Alabina †Alabina io – or unidentified comparable form †Alabina tenuisculpta †Albicetus †Albicetus oxymycterus – type locality for species †Albireo †Albireo savagei – type locality for species Alca †Alcodes †Alcodes ulnulus – type locality for species Aleochara Aletes †Aletes squamigerus †Aletomeryx †Aletomeryx occidentalis – type locality for species †Alforjas Aligena †Aligena cerritensis †Alilepus †Alilepus hibbardi †Alisea – type locality for genus †Alisea grandis – type locality for species †Allodelphis – type locality for genus †Allodelphis pratti – type locality for species †Allodelphis woodburnei – type locality for species †Allodesmus †Allodesmus gracilis – type locality for species †Allodesmus kelloggi – type locality for species †Allodesmus kernensis †Alluvisorex †Alluvisorex chasseae – type locality for species Alnus †Alnus corrallina †Alnus operia †Alopecocyon – type locality for genus †Alopecocyon leardi – type locality for species Alopias †Alopias exigua – or unidentified comparable form †Alopias latidens †Alopias vulpinus – or unidentified comparable form Alvania †Alvania acutelirata †Alvania compacta †Alvania iliuliukensis – or unidentified related form †Alveojunctus †Alveojunctus bowni – type locality for species Amaea Amara †Amara insignis †Amaurellina †Amaurellina caleocia †Amaurellina martinezensis †Amaurellina moragai Amauropsis †Amauropsis alveata Amelanchier Amiantis †Amiantis – type locality for species informal †Amiantis callosa †Amiantis diabloensis †Amiantis mathewsoni Ammobaculites †Ammobaculites cubensis †Ammobaculites strathearnensis – type locality for species Ammospermophilus †Ammospermophilus fossilis †Amorpha †Amorpha condonii †Amorpha oklahomensis †Amphicyon †Amphicyon ingens †Amphimachairodus †Amphimachairodus coloradensis – or unidentified comparable form Amphimorphina †Amphimorphina ignota Amphissa †Amphissa columbiana †Amphissa reticulata †Amphissa ventricosa †Amphissa versicolor Amphiura †Amphiura santaecrucis †Amphora †Amphora ovalis †Amphora perpusilla †Ampullina †Ampullina schencki – or unidentified comparable form Amusium †Amusium lompocensis †Amussiopecten †Amussiopecten vanvlecki †Amynodon †Amynodon advenus – or unidentified comparable form †Amynodon reedi †Amynodontopsis †Amynodontopsis bodei – type locality for species Anachis †Anachis coronata Anadara †Anadara devincta †Anadara obispoana †Anadara osmonti †Anadara perlabiata †Anadara reinharti †Anadara rivulata †Anadara santana – type locality for species †Anadara submontereyana †Anadara trilineata Anaphothrips †Anaphothrips vitreus – type locality for species Anas †Anas americana †Anas carolinense †Anas clypeata †Anas platyrhynchos †Anchitheriomys – or unidentified comparable form †Anchitherium †Anchitherium clarencei †Anchura †Anchura baptos Ancilla †Ancilla fishii †Ancilla gabbi – tentative report †Angelosquilla †Angelosquilla altamirensis Angulogerina Angulus †Angulus buttoni †Angulus castacana †Angulus joaquinensis †Angulus jollaensis – or unidentified comparable form †Angulus longa †Angulus lutea – or unidentified comparable form Anniella Anodontia †Anodontia edentuloides †Anodontia inflata †Anomalina †Anomalina californiensis †Anomalina garzaensis Anomalinoides †Anomalinoides globosa – or unidentified comparable form Anomia †Anomia mcgoniglensis †Anomia peruviana †Anomia vaquerosensis – type locality for species †Ansen †Ansen albifrons Anser †Anser albifrons †Antecalomys †Antecalomys valensis †Antecalomys vasquezi †Antiacodon †Antiacodon venustus Antigona †Antigona undosa †Antilla †Antilla batequensis Antilocapra Antrozous †Antrozous pallidus †Anzanycteris †Anzanycteris anzensis †Apataelurus – or unidentified comparable form †Apatemys †Apatemys bellus †Apatemys downsi – type locality for species †Apatemys uintensis Aphelocoma †Aphelocoma californica †Aphelophlebodes – type locality for genus †Aphelophlebodes stocki – type locality for species †Aphelops †Aphelops megalodus Apiotoma †Apiotoma californiana Aplodontia †Aplodontia rufa Aprionodon Apsena †Apsena laticornis – type locality for species †Apsena pubescens †Apsena rufipes Aquila Aquila chrysaetos †Araeosteus †Araeosteus rothi Arbutus †Arbutus matthesii Arca †Arca hornii – type locality for species †Arca montereyana †Arca pacifica – or unidentified comparable form †Arca santaclarana †Arca sisquocensis †Arca terminumbonis †Arceuthobium †Archaeocyon †Archaeocyon pavidus †Archaeohippus †Archaeohippus mourningi †Archaeohippus ultimus †Archaeolagus †Archaeolagus acaricolus – type locality for species †Archaeolithothamnion †Archaeolithothamnion keenanii – or unidentified related form Archaeolithothamnium †Archaeolithothamnium keenani – type locality for species †Archaeoparadoxia †Archaeoparadoxia weltoni – type locality for species †Archibuteo †Archibuteo ferrugineus Architectonica †Architectonica cognata †Architectonica llajasensis – type locality for species †Architectonica nobilis †Architectonica tuberculata †Architectonica ullreyana – or unidentified comparable form †Archoheia – tentative report Archoplites †Archoplites interruptus Arcinella †Arcinella californica Arctica – tentative report †Arctica weaveri Arctocephalus †Arctodus †Arctodus simus – type locality for species †Arctostaphylos Ardea †Ardea herodias Arenaria †Arenaria melanocephala Arene †Arene mcleani – type locality for species †Argenna †Argenna fossilis – type locality for species Argobuccinum †Argobuccinum katherineae – type locality for species †Argobuccinum oregonensis Argopecten †Argopecten deserti †Argopecten gibbus †Argopecten mendenhalli †Argopecten purpuratus †Argopecten ventricosus †Argyrocetus – type locality for genus †Argyrocetus bakersfieldensis – type locality for species †Argyrocetus joaquinensis – type locality for species Argyropelecus †Argyropelecus bullocki – type locality for species †Argyropelecus bullockii †Arnoldina – type locality for genus †Arnoldina iniistia – type locality for species Arossia †Artocarpus †Artocarpus lessigiana †Asclepiadites †Asclepiadites laterita – type locality for species Asio †Asio priscus †Asio wilsonianus Asterigerina †Asterigerina crassaformis Astraea †Astraea biangulata – or unidentified comparable form †Astraea gibbosa †Astraea gradata †Astraea morani – type locality for species †Astraea undosa Astrangia †Astrangia grandis – type locality for species †Astrangia insignifica – type locality for species †Astrocoenia – tentative report †Astrocoenta †Astrodapsis †Astrodapsis arnoldi – or unidentified comparable form †Astrodapsis cuyamanus †Astrodapsis fernandoensis †Astrodapsis merriami – tentative report †Astrodapsis spatiosus †Astrodaspis †Astrodaspis arnoldi Astropecten Astyris †Astyris gausapata Athene †Athene cunicularia Athleta †Athleta roddai – type locality for species †Atocetus †Atocetus nasalis – type locality for species †Atopotarus – type locality for genus †Atopotarus courseni – type locality for species Atrina †Atrina alamedensis †Aturia †Aturia angustata †Aturia dickersoni – type locality for species †Aturia kerniana – type locality for species †Aturia myrlae – type locality for species †Aturoidea †Aturoidea mathewsonii – type locality for species Atys †Aulophyseter – type locality for genus †Aulophyseter morricei – type locality for species Austrotrophon †Auxides †Auxides sanctaemonicae †Avipeda Aythya †Aythya affinis †Aythya valisineria †Azalois – type locality for genus †Azalois angelensis – type locality for species

B

Baiomys †Baiomys mowi Balaenoptera †Balaenoptera bertae – type locality for species †Balaenoptera cortesi †Balaenoptera davidsonii – type locality for species †Balaenoptera physalus †Balaenoptera ryani †Balaenula Balanophyllia †Balanophyllia elegans †Balanophyllia variabilis – type locality for species Balanus †Balanus crenatus †Balanus gregarius †Balanus nubilus – or unidentified comparable form †Balanus rostratus Balcis †Balcis micans †Balcis monicensis †Balcis oldroydi †Balcis rutila †Balcis thersites Bankia †Bankia setacea – or unidentified comparable form Barbarofusus †Barbarofusus barbarensis Barbatia †Barbatia cliffensis †Barbatia landesi – or unidentified related form †Barbatia strongi – type locality for species †Barbatia suzzalloi – or unidentified comparable form †Barbourofelis †Barbourofelis loveorum †Barbourofelis whitfordi Barleeia †Barleeia marmorea Barnea †Barnea costata †Basirepomys †Basirepomys pliocenicus – type locality for species Bassariscus †Bassariscus antiquus †Bassariscus astutus – or unidentified comparable form †Bassariscus casei †Bassariscus raptor †Bathylagus – type locality for genus †Bathylagus quiescens – type locality for species †Bathylagus quisquilia – type locality for species †Bathysiphon †Bathysiphon eocenica †Bathysiphon sanctaecrucis Bathytoma †Bathytoma pacifica †Batodonoides †Batodonoides powayensis †Batodonoides walshi – type locality for species Bembidion †Bembidion davidae – type locality for species