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
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | †Ichthyosauria |
| Family: | †Ophthalmosauridae |
| Genus: | †Kazakhstanosaurus Bolatovna and Maksutovich, 2021 |
| Type species | |
| †Kazakhstanosaurus efimovi Bolatovna and Maksutovich, 2021
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| Species[citation needed] | |
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Discovery and naming
editThe holotype of K. efimovi was excavated by Vladimir M. Efimov between 1973 and 1976. In 2016, a group of school children under the guidance of Olga Subbotina discovered the holotype of Kazakhstanosaurus shchuchkinensis. The fossils of both species were prepared by Dzhamilya Yakupova. Both species were eventually named and described in 2021 by two papers, by Yakupova Bolatovna and Akhmemenov Maksutovich,[1] and Jakulova,[2] although a paper naming the genus Kazakhstanosaurus was earlier published in 2019. The name remained invalid due to the lack of a type species. The holotype was later put on display at Nazarbayev University, Kazakhstan.[3]
Description
editBased on the known remains, K. efimovi was slightly larger than K. shchuchkinensis.[1]
Classification
editBolatovna 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
edit- ^ a b c d e 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.
- ^ Д.Б. Якупова. 2021. "НОВАЯ НАХОДКА МЕЗОЗОЙСКОГО ИХТИОЗАВРА НА ЗАПАДЕ КАЗАХСТАНА". Экология сериясы. №1 (66). 2021: 51–60
- ^ "Complete skeleton of ichthyosaur to be put on display at Nazarbayev University". USM Services. Retrieved 28 October 2021.
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