Boreosomus
| Boreosomus Temporal range:
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| Boreosomus slab and counterslab fossils at the Geological Museum in Copenhagen | |
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| Genus: | †Boreosomus Stensiö, 1921
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| Type species | |
| Boreosomus arcticus (Woodward, 1912)
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Diaphorognathus Brough, 1933 | |
Boreosomus (meaning: "boreal body") is an extinct genus of Triassic ray-finned fish. It was first described from the Arctic island of Spitsbergen (Svalbard, Norway), but was later also discovered in other parts of the world. Boreosomus had a worldwide distribution during the Early Triassic. Fossils of Boreosomus were found, apart from Spitsbergen, in Greenland, Madagascar and Canada.[2]
Boreosomus belongs to the family Ptycholepidae (= Boreosomidae/Chungkingichthyidae). Other genera of this family are Acrorhabdus (Spitsbergen), Ardoreosomus (Nevada, United States), Chungkingichthys (China), Ptycholepis (global) and Yuchoulepis (China).[3] A characteristic feature of this family is the dorsal fin, which inserts at the level of the pelvic fins in the front part of the body.
See also
References
- ^ "Palaeonisciformes". Paleobiology Database. Retrieved November 17, 2012.
- ^ http://fossilworks.org/bridge.pl?a=taxonInfo&taxon_no=34976
- ^ C. Romano, A. López-Arbarello, D. Ware, J. F. Jenks, and W. Brinkmann. 2019. Marine Early Triassic Actinopterygii from the Candelaria Hills (Esmeralda County, Nevada, USA). Journal of Paleontology 93:971-1000 https://doi.org/10.1017/jpa.2019.18
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