Eurynotoides
| Eurynotoides Temporal range:
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| Scientific classification Edit this classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | †Eurynotoidiformes |
| Family: | †Eurynotoididae |
| Genus: | †Eurynotoides Berg, 1940 |
| Species | |
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| Synonyms | |
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Eurynotoides is an extinct genus of prehistoric freshwater ray-finned fish[1] in the family Eurynotoididae of the order Eurynotoidiformes. It is known from the mid-late Permian of south-central Russia.[2][3]
Taxonomy
[edit | edit source]The genus was erected by Berg in 1940. In 1974, Sergienko described a new genus and species Heterolepis multa from the Middle Permian (Roadian to Wordian)[3] of Kemerovo Region, Russia, as a new member of the Palaeoniscidae family. However, 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 reclassified "Heterolepis" multa into Eurynotoides as 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
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References
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External links
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