Biology:Australosomus
| Australosomus | |
|---|---|
| |
| Australosomus merlei fossil | |
| Scientific classification | |
| Kingdom: | Animalia
|
| Phylum: | |
| Class: | |
| Order: | †Pholidopleuriformes
|
| Family: | †Australosomidae Burton, 1932
|
| Genus: | †Australosomus Pivetau, 1930
|
| Binomial name | |
| †Australosomus merlei (Priem, 1924)
| |
| Type species | |
| †Pristisomus merlei Priem, 1924
| |
| Other species[2] | |
Australosomus (meaning "southern body") is an extinct genus of prehistoric ray-finned fish that lived during the Early Triassic epoch in what is now Greenland, Kenya, Tanzania, Madagascar , South Africa and Canada (British Columbia).[3][4][1]
The type species, Australosomus merlei from Madagascar, was first described as Pristisomus merlei by Ferdinand Priem. A new genus, Australosomus, was later erected for this species by Jean Piveteau.[5]
Australosomus is one of many genera to arise after the Permian-Triassic extinction event, only to die out during the Early Triassic,[4] possibly during a subsequent extinction event.[3]
Most species were marine, except for the African species, which were found in freshwater deposits.
Apprearance
Australosomus is an elongate fish. The interlocking scales (3 to 4 times long as wide), deeply forked caudal fin all help to distinguish this genus.[6] It achieved standard lengths of about 100 mm (3.9 in) to 310 mm (12 in).[4]
See also
- Prehistoric fish
- List of prehistoric bony fish
References
- ↑ 1.0 1.1 Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology 364: 560. Archived from the original on 2011-07-23. https://web.archive.org/web/20110723131237/http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=611&rank=class. Retrieved 2009-02-27.
- ↑ Part 7- Vertebrates. http://mave.tweakdsl.nl/tn/genera7.html. Retrieved 30 June 2016.
- ↑ 3.0 3.1 Ludvigsen, Rolf & Beard, Graham. 1997. West Coast Fossils: A Guide to the Ancient Life of Vancouver Island. pg. 78-79
- ↑ 4.0 4.1 4.2 Romano, Carlo; Koot, Martha B.; Kogan, Ilja; Brayard, Arnaud; Minikh, Alla V.; Brinkmann, Winand; Bucher, Hugo; Kriwet, Jürgen (2016). "Permian-Triassic Osteichthyes (bony fishes): diversity dynamics and body size evolution". Biological Reviews 91 (1): 106–147. doi:10.1111/brv.12161. PMID 25431138.
- ↑ Piveteau, Jean (1930). "Particularités structurales d'un type nouveau de poisson fossile des formations permo-triasiques du nord de Madagascar". Comptes Rendus Hebdomadaires des Séances de l'Académie des Sciences 191: 456–458.
- ↑ Nielsen, Eigil (1949). "Studies on Triassic fishes from East Greenland 2. Australosomus and Birgeria". Palaeozoologica Groenlandica 3: 1–309.
Wikidata ☰ Q15725729 entry
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