This list of the Mesozoic 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 252.17 and 66 million years of age.
A
†Abyssochrysos – tentative report †Abyssochrysos giganteum – type locality for species †Acaeniotyle †Acaeniotyle umbilicata – or unidentified related form †Acanthoceras †Acanthoceras rhotomagense – or unidentified related form †Acanthoceras roguense – or unidentified related form †Acanthoceras sherborni – or unidentified comparable form †Acanthocircus †Acanthocircus aculeatus †Acanthocircus carinatus – or unidentified related form †Acanthocircus dendroacanthos †Acanthocircus dicranocanthos †Acanthocircus meyerhofforum †Acanthocircus multidentatus †Acanthocircus polymorphus †Acanthocircus suboblongus †Acanthocircus trizonalis Acanthosphaera – tentative report †Acanthosphaera lucida †Acastea †Acastea acer †Acastea bipes †Acastea dura †Acastea incontraria †Acastea remusa †Acastea tenuis Acesta Acharax †Acharax stantoni Acila †Acila demessa †Acila princeps †Acrioceras †Acrioceras hamlini †Acrioceras vespertinum †Acrodus †Acrodus wempliae – type locality for species †Acteon †Acteon inornatus †Acteon politus †Acteon sullivanae †Acteonella †Acteonella oviformis †Acteonina †Acteonina berryessensis – type locality for species †Acteonina californica †Acteonina columnaris †Acusten †Acusten ordinarius †Adelodonax †Adelodonax altus †Aechmella †Agnomyax †Agnomyax monilifer †Aguileria – or unidentified comparable form †Alarimella †Alarimella anae – type locality for species †Alarimella veta †Aletopelta – type locality for genus †Aletopelta coombsi – type locality for species †Alievium †Alievium antiquum Amauropsis †Amauropsis pseudoalveata †Ambercyclus †Ambercyclus dilleri †Ambercyclus morganensis †Amphidonte †Amphidonte parasitica †Ampullina †Ampullina avellana †Ampullina concipio †Ampullina mona †Ampullina oviformis †Ampullina packardi †Ampullina stantoni Amuletum †Anagaudryceras †Anagaudryceras mikobokense †Anagaudryceras sacya – or unidentified comparable form †Anahamulina †Anahamulina wilcoxensis †Anarhynchia †Anarhynchia gabbi – or unidentified comparable form †Anasibirites †Anasibirites desertorum †Anasibirites kingianus – type locality for species †Anasibirites lindgreni †Anatomites †Anatomites adalberti †Anatomites damesi †Anatomites edgari †Anatomites externiplicatus †Anatomites intermittens †Anatomites konnincki †Anatomites mendenhalli †Anatomites obsoletus – type locality for species †Anatomites shastensis – type locality for species †Anatomites subintermittens – type locality for species †Anatropites †Anatropites hauchecornei †Anchura †Anchura ainikta – type locality for species †Anchura baptos – type locality for species †Anchura californica †Anchura callosa †Anchura condoniana †Anchura falciformis †Anchura gibbera †Anchura halberdopsis – type locality for species †Anchura phaba – type locality for species †Anglonautilus †Anglonautilus catarinae †Angulobracchia †Angulobracchia bulbosa †Angulobracchia jasperensis †Angulobracchia ozvoldovae †Angulobracchia purisimaensis †Anisoceras †Anisoceras draconum †Anisomyon †Anisomyon meeki †Anomalina †Anomalina pseudopopillosa †Anomia †Anomia – type locality for species A – informal †Anomia jalama †Anomia lineata †Anoplophora – tentative report †Anoplophora shastensis – type locality for species †Anthonya †Anthonya cultriformis †Aphaea †Aphaea ignota †Aphanoptyxis †Aphanoptyxis andersoni †Aphanoptyxis californica – type locality for species †Aphrodina †Aphrodina varians †Aphrosaurus †Aphrosaurus furlongi Aporrhais †Aporrhais veta – type locality for species †Archaeocenosphaera †Archaeocenosphaera ruesti – or unidentified related form †Archaeodictyomitra †Archaeodictyomitra apiarium †Archaeodictyomitra inornata †Archaeodictyomitra oleadita †Archaeodictyomitra rigida †Archaeodictyomitra simplex †Archaeodictyomitra siplex †Archaeodictyomitra sliteri †Archaeodictyomitra vulgaris †Archaeohagiastrum †Archaeohagiastrum minutum – or unidentified related form Archaeolithothamnium †Archaeopus †Archaeopus antennatus †Archaeospongoprunum †Archaeospongoprunum carrierensis †Archaeospongoprunum cortinaensis †Archaeospongoprunum elegans – or unidentified related form †Archaeospongoprunum imlayi †Archaeospongoprunum klingi †Archaeospongoprunum macrostylum – or unidentified related form †Archaeospongoprunum praeimlayi †Archaeospongoprunum praelongum †Archaeospongoprunum tehamaensis Architectonica – tentative report Arcopagia †Arcopagia tehama Arctica †Arctica anthracocola †Arctica denmanensis – or unidentified related form †Arctoceras †Arctoceras tuberculatum †Areaseris †Areaseris nevadensis Argyrotheca †Argyrotheca retrorsa – type locality for species †Arnioceras †Arpadites †Arpadites kingi – type locality for species Arrhoges †Arrhoges californicus †Aspenites – type locality for genus †Aspenites acutus Astarte †Astarte sulcata – tentative report †Astarte sulcuta †Astarte tuscana †Asteroceras †Astrocoenia – report made of unidentified related form or using admittedly obsolete nomenclature Ataphrus †Ataphrus compactus – tentative report †Atira †Atractites †Atractites philippii – type locality for species †Atresius †Atresius liratus †Aucellina – tentative report †Augustynolophus †Augustynolophus morrisi Avicula †Avicula mucronata – type locality for species †Avicula soperi – type locality for species †Axonoceras
B
†Bacchites †Bacchites hyatti – type locality for species †Bacchites pinguis †Baculites †Baculites anceps †Baculites bailyi – or unidentified comparable form †Baculites buttensis – type locality for species †Baculites capensis †Baculites chicoensis †Baculites fairbanksi †Baculites inornatus †Baculites lomaensis †Baculites occidentalis †Baculites recta – or unidentified comparable form †Baculites rex – type locality for species †Baculites schencki – type locality for species †Baculites yokoyamai – or unidentified comparable form †Bagotum †Bagotum modestum †Balantiostoma – tentative report Barbatia †Barrettia †Barrettia sparcilirata †Basilemys †Bathypurpurinopsis †Bathypurpurinopsis stantoni – type locality for species † Belleza †Belleza decora †Belliscala †Belliscala meta Bernaya †Bernaya argonautica – type locality for species †Bernaya berryessae – type locality for species †Bernaya crawfordcatei – type locality for species †Bernaya gualalaensis – type locality for species †Bernaya jeanae – type locality for species †Bernaya kayei – or unidentified related form †Bernaya louellasaulae – type locality for species †Bernaya popenoei – type locality for species †Bernaya rineyi – type locality for species †Bernoullius †Bernoullius brokenkettlensis †Bernoullius cristatus †Bernoullius delnortensis †Bernoullius dicera †Bernoullius irwini †Beudanticeras †Beudanticeras alamoense – type locality for species †Beudanticeras argonauticum – type locality for species †Beudanticeras breweri †Beudanticeras brewerii – or unidentified related form †Beudanticeras haydeni †Bipedis – tentative report †Biplica †Biplica heteroplicata †Biplica isoplicata †Biplica michaeli – or unidentified related form †Biplica miniplicata †Biplica multiplicata †Biplica obliqua †Bistarkum †Bittiscala †Bivallupus †Bivallupus mexicanus †Bochianites †Bochianites paskentaensis †Bolena †Bolena zancajosa †Bositra †Bositra buchi †Bostrychoceras †Bostrychoceras brewerii †Bostrychoceras californicum – type locality for species †Bostrychoceras declive †Bostrychoceras occidentale – type locality for species †Bostrychoceras otsukai – or unidentified related form †Brancoceras †Brancoceras parvum †Brasilichnium †Buchia †Buchia concentrica – or unidentified comparable form †Buchia elderensis †Buchia keyserlingi †Buchia pacifica †Buchia piochii †Buchia terebratuloides †Buchia trigonoides †Bulbificopsis – type locality for genus †Bulbificopsis garza – type locality for species Bulimina †Bulimina obtusa Bulimulus †Bullamirifica †Bullamirifica ainiktos †Bullamirifica elegans Bullaria †Bullaria nortonensis Bullina †Bullina yoloensis – type locality for species †Butticeras †Butticeras studleyi – type locality for species
C
†Califadesma †Califadesma elaphium †Californigonia – type locality for genus †Californigonia plumasensis – type locality for species. Formerly classified as Trigonia plumasensis. †Californites – type locality for genus †Californites careyi – type locality for species †Californites merriami – type locality for species †Californosaurus Callianassa – tentative report †Calliconites †Calliconites drakei – type locality for species †Calliomphalus – tentative report Callista – tentative report †Callista pseudoplana – or unidentified related form †Callista subtrigona †Callistalox †Callistalox fragilis †Calva †Calva crassa †Calva elderi †Calva nitida †Calva peninsularis †Calva spissa †Calva taffi †Calva varians †Calycoceras †Calycoceras naviculare †Camptonectes †Camptonectes curvatus – or unidentified comparable form †Canadoceras †Canadoceras celeste – type locality for species †Canadoceras fraternum †Canadoceras mysticum †Canadoceras newberryanum †Canadoceras subtilobatum – or unidentified related form Cancellaria – tentative report †Canelonus †Canelonus conus †Caneta †Caneta hsui †Canoptum †Canoptum anulatum †Canoptum poissoni †Canoptum rugosum Cantharus †Cantharus occidentalis †Canutus †Canutus giganteus †Canutus rockfishensis Capulus – or unidentified comparable form †Capulus silverthorni – type locality for species Cardinia †Cardinia gleimi – type locality for species †Cardiomorpha – tentative report †Cardiomorpha digglesi – type locality for species Cardita †Cardita jenkinsi – type locality for species †Cassideus †Cassideus yoloensis †Cecrops †Cecrops septemporata †Cecrops septemporatus †Celtites †Celtites steindachneri Cenodiscus †Cenodiscus alievi Cenosphaera †Cenosphaera boria †Ceriostella †Ceriostella martini Cerithidea Cerithium †Cerithium alternata †Cerithium totiumsanctorum – or unidentified comparable form †Choristoceras †Choristoceras klamathense – type locality for species †Choristoceras marshi †Christitys – type locality for genus †Christitys delta – type locality for species †Christitys martini – or unidentified comparable form †Christitys medica – type locality for species †Cidarina †Cidarina beta – type locality for species †Cidarina cretacea – type locality for species Cidaris †Cidaris californicus †Cidaris plumasensis †Cidaris taylorensis †Cladoceramus †Cladoceramus undulatoplicatus †Clinura †Clinura anassa †Clisocolus †Clisocolus cordatus †Clisocolus corrugatus †Clisocolus dubius †Collignoniceras †Collignoniceras bakeri †Collonia †Collonia occidentalis – type locality for species †Cophocara †Cophocara stantoni †Coralliochama †Coralliochama orcutti Corbicula †Corbicula astartoides Corbula †Corbula cancellifera †Corbula parilis †Corbula pozo †Corbula torta – or unidentified comparable form †Corbula traski †Corbula traskii Cornutella †Cosmonautilus †Cosmonautilus dilleri †Cosmonautilus hersheyi – type locality for species †Cosmonautilus pacificus – type locality for species †Cosmonautilus shastensis – type locality for species †Costispiriferina †Costispiriferina pittensis †Courtilloticeras †Courtilloticeras stevensi – type locality for species Crassatella †Crassatella conradiana †Crassatella mercedensis – tentative report †Crassatella saulae †Crassatella triangulata †Crassatella triangulatus †Crassatellina †Crassatellina saulae †Crioceratites †Crioceratites latus