Kazakhstanosaurus

Kazakhstanosaurus (meaning "Kazakhstan lizard") is an extinct genus of undorosaurid ichthyosaur from the Late Jurassic of Kazakhstan and Russia. Two species are known: the type, K. efimovi, and K. shchuchkinensis, both named and described in 2021.[1]

Kazakhstanosaurus
Temporal range: Late Jurassic,
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Reptilia
Order:
†Ichthyosauria
Family:
†Undorosauridae?
Genus:
†Kazakhstanosaurus

Bolatovna and Maksutovich, 2021
Type species
†Kazakhstanosaurus efimovi
Bolatovna and Maksutovich, 2021
Other species
  • †K. shchuchkinensis Bolatovna and Makustovich, 2021

Discovery and naming

The holotype of K. efimovi was discovered in 2016 by a group of school children and was excavated by Vladimir A. Efimov and Olga Subbotina and the fossils of both species were prepared by Dzhamilya Yakupova. Both species were eventually named and described in 2021 by Yakupova Bolatovna and Akhmemenov Maksutovich,[1] although the paper naming Kazakhstanosaurus was first submitted in 2019. The holotype was later put on display at Nazarbayev University, Kazakhstan.[2]

Description

Based on the known remains, K. efimovi was slightly larger than K. shchuchkinensis.[1]

Classification

Bolatovna and Makustovich (2021) found Kazakhstanosaurus to be the sister taxon to the contemporaneous Undorosaurus.[1] It also was placed in the Undorosauridae in 2021 and was likely an ancestor of Undorosaurus itself.[1]

References
  1. Болатовна, Якупова Джамиля; Максутович, Ахмеденов Кажмурат (2021). "НОВЫЙ ВИД KAZAKHSTANOSAURUS EFIMOVI YAKUPOVA ET AKHMEDENOV SP. NOV. (ICHTHYOSAURIA, UNDOROSAURIDAE) ИЗ ВЕРХНЕЮРСКИХ ОТЛОЖЕНИЙ СРЕДНЕГО ПОВОЛЖЬЯ РОССИИ". Ученые записки Казанского университета. Серия Естественные науки. 163 (2): 251–263. ISSN 2542-064X.
  2. "Complete skeleton of ichthyosaur to be put on display at Nazarbayev University". USM Services. Retrieved 28 October 2021.


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