Eurynotoides

Eurynotoides is an extinct genus of prehistoric bony fish[1] in the family Eurynotoididae of the order Eurynotoidiformes.[2]

Eurynotoides
Temporal range: Permian
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Actinopterygii
Order:
Eurynotoidiformes
Family:
Eurynotoididae
Genus:
Eurynotoides Berg, 1940
Species
  • †Eurynotoides costatus Eichwald, 1861
  • †Eurynotoides multa Sergienko, 1974
  • †Eurynotoides nanus Eichwald, 1861
Synonyms
  • Heterolepis Sergienko, 1974 [preoccupied by snake]

Taxonomy

The genus was erected by Berg in 1940. In 1974, Sergienko described a new genus and species Heterolepis multa from the Middle Permian (Kazanian) of Kemerovo Region, Russia, as a new member of the Palaeoniscidae family. Howerer, Heterolepis was already in use for the extant snake Heterolepis capensis (Smith, 1847), making Sergienko's naming a junior homonym. In 2023, A. S. Bakaev redescribed "Heterolepis" multa as a new species in the genus Eurynotoides, E. multa. This species is different from E. nanus and E. costatus by having ganoin peninsula-shaped structures on the anterior margin of the scale as well as by the presence of denticles on both posterior and lower edge of the scale.[2]

See also

References
  1. Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology. 364: 560. Archived from the original on July 23, 2011. Retrieved 2009-02-27.
  2. A. S. Bakaev (2023). "Revision of Permian Ray-Finned Fishes from the Kazankovo-Markino Formation of the Kuznetsk Basin". Paleontological Journal. 57 (3): 335-342. doi:10.1134/S0031030123030036. Archived from the original on July 8, 2023.
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