Biology:Acentrophorus

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Short description: Extinct genus of fishes

Acentrophorus
Temporal range: Wuchiapingian
259.51–254.14 Ma[1][2]
Acentrophorus varians.jpg
Acentrophorus varians
Acentrophorus rekonstruktion.jpg
Scientific classification e
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Clade: Ginglymodi
Order: Semionotiformes
Genus: Acentrophorus
Traquair, 1877
Type species
Palaeoniscus glaphyrus
Agassiz, 1835
Other Species
  • A. abbsii (Kirkby, 1862)
  • A. altus (Kirkby, 1864)
  • A. varians (Kirkby, 1862)

Acentrophorus is an extinct genus of prehistoric ray-finned fish from the Wuchiapingian (Lopingian/late Permian) of England (Marl Slate) and Germany (Kupferschiefer).[2] There may also be a Triassic occurrence in Australia .[1]

Classification

The type species, Acentrophorus glaphyrus, was first described under the genus name "Palaeoniscus" (=Palaeoniscum) by Louis Agassiz.[3] Ramsay H. Traquair later errected a new genus for this species, Acentrophorus, to which he also referred the species "Palaeoniscus" abbsii, "P." altus and "P." varians.[4]

Acentrophorus has been referred to the ginglymodian order Semionotiformes.[5] Acentrophorus was proposed to be the oldest known neopterygian,[6] the group of ray-finned fish that encompasses the vast majority of extant species. However, the genus has been described as "enigmatic"[7] and "pending restudy".[8]

See also

  • Prehistoric fish
  • List of prehistoric bony fish

References

  1. 1.0 1.1 "Acentrophorus Traquair 1877 (ray-finned fish)". http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=35134. 
  2. 2.0 2.1 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. 
  3. Agassiz, Louis (1833–1843). Recherches sur les poissons fossiles. Petitpierre, Neuchâtel. https://www.biodiversitylibrary.org/bibliography/4275. 
  4. Traquair, Ramsay H. (1877). "On the Agassizian Genera Amblypterus, Palæoniscus, Gyrolepis, and Pygopterus". Quarterly Journal of the Geological Society 33 (1–4): 548–578. doi:10.1144/GSL.JGS.1877.033.01-04.33. 
  5. 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 2009-02-23. 
  6. "Neopterygii: Semionotiformes". http://palaeos.com/vertebrates/neopterygii/semionotiformes.html. 
  7. Friedman, Matt (2022). "The Macroevolutionary History of Bony Fishes: A Paleontological View" (in en). Annual Review of Ecology, Evolution, and Systematics 53 (1): 353–377. doi:10.1146/annurev-ecolsys-111720-010447. ISSN 1543-592X. https://www.annualreviews.org/doi/10.1146/annurev-ecolsys-111720-010447. 
  8. Romano, Carlo (2021). "A Hiatus Obscures the Early Evolution of Modern Lineages of Bony Fishes". Frontiers in Earth Science 8: 618853. doi:10.3389/feart.2020.618853. 

Wikidata ☰ Q4673086 entry