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.
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
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abcMichael R. Cooper; Héctor A. Leanza (2019). "On the Middle Jurassic – Early Cretaceous Megatrigoniinae (Bivalvia, Trigoniida): their biogeography, evolution and classification". Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 291 (1): 19–40.
doi:
10.1127/njgpa/2019/0787.