The Ialovachsk or Yalovach Formation is a geologic formation in Kyrgyzstan, Tajikistan and Uzbekistan dating to the Santonian age of the Cretaceous period.[1]
| Ialovachsk Formation | |
|---|---|
| Stratigraphic range: Santonian | |
| Type | Geological formation |
| Lithology | |
| Primary | Sandstone |
| Other | Conglomerate |
| Location | |
| Coordinates | 40°12′N 71°42′E / 40.2°N 71.7°E |
| Approximate paleocoordinates | 34°54′N 65°48′E / 34.9°N 65.8°E |
| Region | Jalal-Abad, Osh Sughd Fergana |
| Country |  Kyrgyzstan Tajikistan Uzbekistan |
| Extent | Fergana Valley & Range |
   Ialovachsk Formation (Kyrgyzstan) | |
Fossil content
editFossil dinosaur eggs[1] as well as pterosaur, dinosaur,[2][3] turtle[4] and crocodyliforme[5][6] remains have been recovered from the formation.[7]
The following fossils have been reported from the formation:
- Amphibians
- Mammals
- Snakes
- Turtles
- Adocus foveatus
- Anatolemys maximus
- Lindholmemys gravis
- Shachemys baibolatica
- Trionyx kansaiensis
- T. riabinini
- Dinosaurs
- cf. Alectrosaurus sp.
- Ankylosauridae indet.
- ?Ceratopsidae indet.
- Dromaeosauridae indet.
- Hadrosauridae indet.
- cf. Hypsilophodontidae indet.
- Kansaignathus sogdianus
- ?Neoceratopsia indet.
- Neosauropoda indet.
- Ornithomimidae indet.
- ?Oviraptoridae indet.
- Therizinosauridae indet.
- ?Theropoda indet.
- Troodontidae indet.
- Tyrannosauridae indet.
- Other archosaurs
See also
editReferences
edit- ^ a b Weishampel et al., 2004, pp.517-607
- ^ 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. Bibcode:2006PalJ...40..103A. doi:10.1134/s0031030106010126. ISSN 0031-0301. S2CID 140673522.
- ^ 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. Bibcode:2012PalJ...46..512A. doi:10.1134/s0031030112050036. ISSN 0031-0301. S2CID 140665908.
- ^ 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. Bibcode:2010JVPal..30..383V. doi:10.1080/02724631003617548. ISSN 0272-4634. S2CID 83498792.
- ^ 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. 185 (2): 335–387. 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.
- ^ Yalovach Formation at Fossilworks.org
Bibliography
edit- Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21
Further reading
edit- 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