Ialovachsk Formation
The Ialovachsk or Yalovach Formation is a Santonian geologic formation in Kyrgyzstan, Tajikistan and Uzbekistan. Fossil dinosaur eggs have been reported from the formation.[1]
| Ialovachsk Formation Stratigraphic range: Santonian 85 Ma | |
|---|---|
| Type | Geological formation |
| Lithology | |
| Primary | Sandstone |
| Other | Conglomerate |
| Location | |
| Coordinates | 40.2°N 71.7°E |
| Approximate paleocoordinates | 34.9°N 65.8°E |
| Region | Jalal-Abad, Osh Sughd Fergana |
| Country |    |
| Extent | Fergana Valley & Range |
  Ialovachsk Formation (Kyrgyzstan) | |
Fossil content
The following fossils were reported from the formation:[2]
Pterosaur fossils have been recovered from the formation. Alongside those of many other vertebrate taxa, including dinosaurs,[3][4] turtles[5] and the crocodyliformes Kansajsuchus[6] and Tadzhikosuchus.[7]
- Amphibians
- Mammals
- ?Kulbeckia kulbecke
- Turtles
- Adocus foveatus
- Anatolemys maximus
- Lindholmemys gravis
- Shachemys baibolatica
- Trionyx kansaiensis
- T. riabinini
- Dinosaurs
- cf. Alectrosaurus sp.
- Hadrosaurinae indet.
- Ankylosauridae indet.
- Coeluroidea indet.
- Dromaeosauridae indet.
- Hadrosauridae indet.
- Neosauropoda indet.
- Ornithomimidae indet.
- Therizinosauridae indet.
- Troodontidae indet.
- Tyrannosauridae indet.
- cf. Hypsilophodontidae indet.
- ?Ceratopsidae indet.
- ?Hadrosauridae indet.
- ?Neoceratopsia indet.
- ?Oviraptoridae indet.
- ?Pterosauria indet.
- ?Theropoda indet.
- Other reptiles
See also
- List of dinosaur-bearing rock formations
References
- Weishampel et al., 2004, pp.517-607
- Yalovach Formation at Fossilworks.org
- Alifanov, V. R.; Averianov, A. O. (January 2006). "On the finding of ornithomimid dinosaurs (Saurischia, Ornithomimosauria) in the Upper Cretaceous beds of Tajikistan". Paleontological Journal. 40 (1): 103–108. doi:10.1134/s0031030106010126. ISSN 0031-0301.
- Averianov, A. O.; Alifanov, V. R. (September 2012). "New data on duck-billed dinosaurs (Ornithischia, Hadrosauridae) from the upper cretaceous of Tajikistan". Paleontological Journal. 46 (5): 512–519. doi:10.1134/s0031030112050036. ISSN 0031-0301.
- Vitek, Natasha S.; Danilov, Igor G. (2010-03-24). "New material and a reassessment of soft-shelled turtles (Trionychidae) from the Late Cretaceous of Middle Asia and Kazakhstan" (PDF). Journal of Vertebrate Paleontology. 30 (2): 383–393. doi:10.1080/02724631003617548. ISSN 0272-4634.
- Kuzmin, Ivan T.; Skutschas, Pavel P.; Boitsova, Elizaveta A.; Sues, Hans-Dieter (2018). "Revision of the large crocodyliform Kansajsuchus (Neosuchia) from the Late Cretaceous of Central Asia". Zoological Journal of the Linnean Society. doi:10.1093/zoolinnean/zly027.
- Storrs, Glenn W.; Efimov, Mikhail B. (2000). "Mesozoic crocodyliforms of north-central Eurasia". In Benton, Michael J.; Shishkin, Mikhail A.; Unwin, David M.; Kurochkin, Evgenii N. (eds.). The Age of Dinosaurs in Russia and Mongolia. Cambridge: Cambridge University Press. pp. 402–419. ISBN 978-0-521-55476-3.
Bibliography
- Weishampel, David B.; Peter Dodson, and Halszka Osmólska (eds.). 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21. ISBN 0-520-24209-2
Further reading
- I. G. Danilov, V. B. Sukhanov, and E. V. Syromyatnikova. 2011. New Asiatic materials on turtles of the family Adocidae with a review of the adocid record in Asia. Proceedings of the Zoological Institute, Russian Academy of Sciences 315(2):101-132
- N. N. Bakhurina and D. M. Unwin. 1995. a survey of pterosaurs from the Jurassic and Cretaceous of the former Soviet Union and Mongolia. Historical Biology 10:197-245
- L. A. Nessov. 1995. Dinozavri severnoi Yevrazii: Novye dannye o sostave kompleksov, ekologii i paleobiogeografii [Dinosaurs of northern Eurasia: new data about assemblages, ecology, and paleobiogeography]. Institute for Scientific Research on the Earth's Crust, St. Petersburg State University, St. Petersburg 1-156
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