Biology:Obirkovia

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Short description: Genus of extinct pareiasaur reptiles

Obirkovia
Scientific classification edit
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Parareptilia
Order: Procolophonomorpha
Clade: Pareiasauria
Clade: Elginiidae
Genus: Obirkovia
Species:
O. gladiator
Binomial name
Obirkovia gladiator
Bulanov & Yashina, 2005

Obirkovia is an extinct genus of pareiasaur from the late Permian Salarevo Formation of Russia. The genus contains a single species, O. gladiator, known from a left quadratojugal.

Discovery and naming

The Obirkovia holotype specimen, PIN, no. 4546/18, was discovered in sediments of the Salarevo Formation (Vyatka Horizon) at the Obirkovo locality in Babushkinskii District of Vologda Oblast, Russia. The specimen consists of a single left quadratojugal.[1]

In 2005, Bulanov & Yashina described Obirkovia gladiator as a new genus and species of elginiid pareiasaur based on these fossil remains. The generic name, "''Obirkovia", references the locality where the holotype was discovered. The specific name, "gladiator", references the armed combatants of Ancient Rome.[1]

Classification

Cisneros, Dentzien-Dias & Francischini (2021) recovered Obirkovia as an elginiid member of the Pareiasauria, in a clade that also contains Elginia spp. and Arganaceras. The results of their phylogenetic analyses are shown in the cladogram below:[2]

Pareiasauria

'Bradysaurus' seeleyi

Bradysauria

Nochelesaurus

Bradysaurus baini

Embrithosaurus

Bunostegos

Parasaurus

Honania

Deltavjatia

Pumiliopareiasauria

Provelosaurus

Nanoparia

Pumiliopareia

Anthodon

Therischia

Shihtienfenia

Pareiasuchus nasicornis

Pareiasuchus peringueyi

Scutosaurus

Pareiasaurus serridens

Elginiidae

Elginia wuyongae

Elginia mirabilis

Obirkovia

Arganaceras

References

  1. 1.0 1.1 Bulanov, V. V.; Yashina, O. V. (2005). "Elginiid Pareiasaurs of Eastern Europe". Paleontological Journal 39 (4): 428–432. https://www.researchgate.net/publication/292545512. 
  2. Cisneros, Juan C.; Dentzien-Dias, Paula; Francischini, Heitor (2021-11-17). "The Brazilian Pareiasaur Revisited". Frontiers in Ecology and Evolution 9. doi:10.3389/fevo.2021.758802. ISSN 2296-701X. 

Wikidata ☰ Q124006660 entry