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''Bobasatrania'' is an extinct genus of prehistoric bony fish that survived the Permian-Triassic extinction event. The genus originated during the late Permian, survived the Permian-Triassic extinction event, and underwent a speciation event during the Triassic (approx 240M years BP) in the shallow coastal waters off the Pangaean supercontinent. Their fossils are therefore found throughout the world,〔Nielsen, Eigil. (A preliminary note on ''Bobasatrania groenlandica'' ). Meddr. Dansk geol. Forening, 12 (2), 197-204.〕 with some of the best examples coming from the Wapiti Lake region of British Columbia, Canada.〔() Past Lives: Chronicles of Canadian Paleontology〕 They have a distinctive diamond-shaped body, forked tail and long thin pectoral fins. The larger Permian species are up to a metre in length, though the Triassic species are considerably smaller. The structure of their teeth suggests they fed on small shelled animals. ==References== * Nielsen, Eigil. 1942. Studies on Triasslc Fishes from East Greenland. I. ''Glaucolepis'' and ''Boreosomus''. ''Palaeozoologica Groenlandica''. vol. I. * Nielsen, Eigil. 1947. Studies on Triassic Fishes from East Greenland. II. ''Australosomus'' and ''Birgeria''. ''Palaeozoologica Groenlandica''. vol. III. 204 Medd, fra Dansk Geol. Forening. København. Bd. 12. (). * Stensiö, E. A:EON, 1921. Triassic Fishes from Spitsbergen. Part I. Vienna. * Stensiö, E. 1932. Triassic Fishes from East Greenland. Medd. om Grønland, Bd. 83, Nr. 3. * Stensiö, E. 1947. The sensory Lines and dermal Bones of the Cheek in Fishes and Amphibians. Stockholm, Kungl. Sv. Vet. Akad. Handl., ser. 3, Bd. 22, no. 1. * Watson, D . M. S., 1928. On some Points in the Structure of Palaeonlscid and allied Fish. London, Zool. Soc. Proc, pt. 1. * White, E . I., 1932. On a new Triassic Fish from North-East Madagascar. Ann. and Mag. of Nat, Hist. Ser. 10, vol. X. * Bürgin, T. 1992. Basal ray-finned fishes (Osteichthyes; Actinopterygii) from the Middle Triassic of Monte San Giorgio (Canton Tessin, Switzerland). ''Schweizerische Paläontologische Abhandlungen'' 114:1-164. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Bobasatrania」の詳細全文を読む スポンサード リンク
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