Biology:Dicellopyge

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Short description: Extinct genus of fishes


Dicellopyge
Temporal range: Anisian[1]
Dicellopyge draperi.jpg
Dicellopyge draperi fossil
Scientific classification e
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Palaeonisciformes
Family: Palaeoniscidae
Genus: Dicellopyge
Brough, 1931
Type species
Dicellopyge macrodentata
Brough, 1931
Species
  • D. draperi (Woodward, 1931) (=D. macrodentata Brough, 1931)
  • D. lissocephalus Brough, 1931
  • ?D. tenuis Broom, 1909
Synonyms
  • Dicellopygae Brough, 1931

Dicellopyge is an extinct genus of freshwater[1] ray-finned fish that lived during the Anisian age of the Middle Triassic epoch in what is now South Africa . It was originally named "Dicellopygae" by James Brough but the name was later corrected to Dicellopyge by Peter Hutchinson.[2]

Dicellopyge coexisted with fish such as Lissodus, Elonichthys, Ceratodus, Coelacanthus, Helichthys, Meidiichthys, and Atopocephala.[1]

Appearance

It is characterized , for example, by the short, blunt snout and a deeply cleft tail fin. Two species are known, D. draperi (=D. macrodentata) and D. lissocephalus, which were contemporaries and differed in scale and tail fin morphology.

Classification

It was initially classified in its own family, the Dicellopygidae,[2] but has subsequently been referred to the Palaeoniscidae[3] as a close relative of Acrolepis, Cornuboniscus, Belichthys, and the Amblypteridae.[4]

References

  1. 1.0 1.1 1.2 Fischer, Jan (2008). "Brief synopsis of the hybodont form taxon Lissodus BROUGH, 1935, with remarks on the environment and associated fauna". Freiberger Forschungshefte 528 (16): 1–23. https://www.researchgate.net/publication/248399734. 
  2. 2.0 2.1 Hutchinson, Peter (1975). "Two Triassic fish from South Africa and Australia, with comments on the evolution of the Chondrostei". Palaeontology 18 (3): 613–629. https://www.palass.org/publications/palaeontology-journal/archive/18/3/article_pp613-629. 
  3. Poplin, Cecile; Lund, Richard (1997). "Evolution of the premaxillary in the primitive fossil actinopterygians". Geodiversitas 19 (3): 557–565. http://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g1997n3a3.pdf. 
  4. Dietze, Kathrin (2000). "A Revision Of Paramblypterid And Amblypterid Actinopterygians From Upper Carboniferous–Lower Permian Lacustrine Deposits Of Central Europe". Palaeontology 43 (5): 927–966. doi:10.1111/1475-4983.00156. Bibcode2000Palgy..43..927D. 

Wikidata ☰ Q1027262 entry