Bobasatrania

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Bobasatrania
Temporal range: Late Permian to Triassic
Bobasatrania.jpg
Bobasatrania slab and counterslab fossils at the Geological Museum in Copenhagen
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclass: Osteichthyes
Order: Bobasatraniiformes
Family: Bobasatraniidae
Genus: Bobasatrania
White, 1932
species
  • Bobasatrania canadensis Lambe, 1914
  • Bobasatrania ceresiensis Bürgin, 1992
  • Bobasatrania groenlandica Stensiö, 1932
  • Bobasatrania mahavavica White, 1932 (type species)
  • Bobasatrania nathorsti Stensiö, 1921
Synonyms
  • Platysomus nathorsti Stensiö, 1921

Bobasatrania is an extinct genus of prehistoric bony fish that survived the Permian-Triassic extinction event.

Restoration
Fossil of Bobasatrania canadensis (AMNH 6210)

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,[1] with some of the best examples coming from the Wapiti Lake region of British Columbia, Canada.[2] 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[edit]

  1. ^ Nielsen, Eigil. A preliminary note on Bobasatrania groenlandica. Meddr. Dansk geol. Forening, 12 (2), 197-204.
  2. ^ "Archived copy". Archived from the original on 2009-12-21. Retrieved 2009-11-13.  Past Lives: Chronicles of Canadian Paleontology
  • 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. [1952].
  • 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.

See also[edit]