Acentrophorus
Temporal range: Wuchiapingian
Acentrophorus varians
Scientific classification Edit this classification
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

References

  1. 1 2 "†Acentrophorus Traquair 1877 (ray-finned fish)". Fossilworks – Gateway to the Paleobiology Database. Retrieved 17 December 2021.
  2. 1 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. S2CID 5332637.
  3. ↑ Agassiz, Louis (1833–1843). Recherches sur les poissons fossiles. Petitpierre, Neuchâtel.
  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. S2CID 128716999.
  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. Retrieved 2009-02-23.
  6. ↑ "Neopterygii: Semionotiformes". Palaeos. Retrieved 9 March 2017.
  7. ↑ Friedman, Matt (2022). "The Macroevolutionary History of Bony Fishes: A Paleontological View". Annual Review of Ecology, Evolution, and Systematics. 53 (1): 353–377. doi:10.1146/annurev-ecolsys-111720-010447. ISSN 1543-592X. S2CID 251888176.
  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.
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