Albertonia

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Albertonia
Albertonia cupidinia ROM.jpg
A. cupidinia from Wapiti Lake (B.C.), on display at the ROM
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Parasemionotiformes
Family: Parasemionotidae
Genus: Albertonia
Gardiner, 1966
Type species
Albertonia cupidinia
Lambe, 1916
Synonyms

Albertonia is a genus of extinct fish. Fossils have been found in the western Canadian provinces of British Columbia and Alberta, dating to the Early Triassic period. [1] [2]

Contents

Taxonomy

The type specimen (NMC 757) came from Alberta, in the Sulphur Mountain Formation. The only species, Albertonia cupidinia, was originally described in 1916 as a species of Elonichthys by Lawrence Lambe, who then later reassigned it to the genus Dollopterus . In 1966, Brian Gardiner found that the species was not referable to either genus, and thus erected the genus Albertonia. He assigned the genus to Perleididae. [2] [3] In 1976, Schaeffer and Mangus reassigned the genus to Parasemionotidae after better preserved specimens were discovered. [3] [4]

Description

Albertonia had peculiarly large pectoral fins. [2] Its deep fusiform body, broad tail peduncle, and well developed tail fin suggest that it was a slow but strong swimmer. It was weakly toothed and appears to have lacked pharyngeal teeth. [4]

References

  1. Brinkmann, W.; Romano, C.; Bucher, H.; Ware, D.; Jenks, J. (2010). "Palaeobiogeography and stratigraphy of advanced Gnathostomian fishes (Chondrichthyes and Osteichthyes) in the Early Triassic and from selected Anisian localities (report 1863-2009): Literaturbericht". Zentralblatt für Geologie und Paläontologie. Teil 2. 2009 (5/6): 765–812. doi:10.5167/uzh-34071. ISSN   0044-4189.
  2. 1 2 3 Gardiner, Brian George (1966). "Catalogue of Canadian fossil fishes". Royal Ontario Museum. Life Sciences Contributions. 68.
  3. 1 2 Neuman, Andrew G. (August 2015). "Fishes from the Lower Triassic portion of the Sulphur Mountain Formation in Alberta, Canada: geological context and taxonomic composition". Canadian Journal of Earth Sciences. 52 (8): 557–568. doi:10.1139/cjes-2014-0165. ISSN   0008-4077.
  4. 1 2 Schaeffer, Bobb; Mangus, Marlyn (1976). "An Early Triassic fish assemblage from British Columbia" (PDF). Bulletin of the American Museum of Natural History. 156.