| Zhirkindek Formation | |
|---|---|
| Stratigraphic range: Turonian-Coniacian ~ | |
| Type | Geological formation |
| Underlies | Bostobe Formation |
| Thickness | At least 42 m (138 ft) |
| Lithology | |
| Primary | Sandstone |
| Other | Claystone, siltstone |
| Location | |
| Coordinates | 46°12′N 64°12′E / 46.2°N 64.2°E |
| Approximate paleocoordinates | 41°00′N 57°18′E / 41.0°N 57.3°E |
| Region | Qyzylorda |
| Country |  Kazakhstan |
  Zhirkindek Formation (Kazakhstan) | |
The Zhirkindek Formation is a Late Cretaceous geologic formation in Kazakhstan.[1] The primary lithology is sand with interbeds of clay and silt, and represents a coastal to coastal marine environment.[2] The formation has produced numerous fossils, including Lindholmemydid and Trionychid cryptodires, indeterminate remains of dinosaurs (Ankylosauridae indet., Hadrosauroidea indet., Neoceratopsia indet., Sauropoda indet., Tyrannosauroidea indet., Ornithomimidae indet., Therizinosauroidea indet and Dromaeosauridae indet) and an indeterminate species of pterosaur Azhdarcho.[3]
- ^ Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
- ^ Kordikova, E. G.; Polly, P. D.; Alifanov, V. A.; Roček, Z.; Gunnell, G. F.; Averianov, A. O. (March 2001). "Small vertebrates from the late Cretaceous and early Tertiary of the northeastern Aral Sea region, Kazakhstan". Journal of Paleontology. 75 (2): 390–400. doi:10.1017/S0022336000018187. ISSN 0022-3360.
- ^ Averianov, Alexander; Dyke, Gareth; Danilov, Igor; Skutschas, Pavel (2015-02-20). "The paleoenvironments of azhdarchid pterosaurs localities in the Late Cretaceous of Kazakhstan". ZooKeys (483): 59–80. Bibcode:2015ZooK..483...59A. doi:10.3897/zookeys.483.9058. ISSN 1313-2970. PMC 4351447. PMID 25755624.