page_title: List of the Mesozoic life of California
section_title: B
hierarchical_section_title: List of the Mesozoic life of California / B
caption_attribution_description: English: Basilemys variolosa, ROM.
context_page_description: 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.
context_section_description: †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
caption: Mounted fossilized skeleton of the Cretaceous turtle Basilemys
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