Ialovachsk_Formation
Ialovachsk Formation
Late Cretaceous geologic formation in Central Asia
The Ialovachsk or Yalovach Formation is a geologic formation in Kyrgyzstan, Tajikistan and Uzbekistan dating to the Santonian age of the Cretaceous period. [1]
Quick Facts Type, Lithology ...
Ialovachsk Formation | |
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Stratigraphic range: Santonian 85 Ma | |
Type | Geological formation |
Lithology | |
Primary | Sandstone |
Other | Conglomerate |
Location | |
Coordinates | 40.2°N 71.7°E / 40.2; 71.7 |
Approximate paleocoordinates | 34.9°N 65.8°E / 34.9; 65.8 |
Region | Jalal-Abad, Osh Sughd Fergana |
Country | Kyrgyzstan Tajikistan Uzbekistan |
Extent | Fergana Valley & Range |
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Fossil 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
- ?Kulbeckia kulbecke
- 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 reptiles
- Weishampel et al., 2004, pp.517-607
- 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. 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.; 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
- 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