Ialovachsk Formation | |
---|---|
Stratigraphic range: Santonian 85 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓ | |
Type | Geological formation |
Lithology | |
Primary | Sandstone |
Other | Conglomerate |
Location | |
Coordinates | 40°12′N 71°42′E / 40.2°N 71.7°E / 40.2; 71.7 |
Approximate paleocoordinates | 34°54′N 65°48′E / 34.9°N 65.8°E / 34.9; 65.8 |
Region | Jalal-Abad, Osh Sughd Fergana |
Country | Kyrgyzstan Tajikistan Uzbekistan |
Extent | Fergana Valley & Range |
Ialovachsk Formation (Kyrgyzstan) |
The Ialovachsk or Yalovach Formation is a geologic formation in Kyrgyzstan, Tajikistan and Uzbekistan dating to the Santonian age of the Cretaceous period.
Fossil content
Fossil dinosaur eggs as well as pterosaur, dinosaur, turtle and crocodyliforme remains have been recovered from the formation.
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
- Azhdarchidae indet.
- ?Azhdarcho sp.
- Aves indet.
- Kansajsuchus extensus
- ?Pterosauria indet.
- Tadzhikosuchus macrodentis
See also
References
- ^ 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
- 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
- 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 . Institute for Scientific Research on the Earth's Crust, St. Petersburg State University, St. Petersburg 1-156
- Geologic formations of Kyrgyzstan
- Geologic formations of Tajikistan
- Geologic formations of Uzbekistan
- Upper Cretaceous Series of Asia
- Santonian Stage
- Sandstone formations
- Conglomerate formations
- Fluvial deposits
- Ooliferous formations
- Paleontology in Kyrgyzstan
- Paleontology in Tajikistan
- Paleontology in Uzbekistan