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
↓
TypeGeological formation
Lithology
PrimarySandstone
OtherConglomerate
Location
Coordinates40.2°N 71.7°E / 40.2; 71.7
Approximate paleocoordinates34.9°N 65.8°E / 34.9; 65.8
RegionJalal-Abad, Osh
Sughd
Fergana
Country Kyrgyzstan
 Tajikistan
 Uzbekistan
ExtentFergana 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
Dinosaurs
Other reptiles

See also

References
  1. Weishampel et al., 2004, pp.517-607
  2. Yalovach Formation at Fossilworks.org
  3. 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. S2CID 140673522.
  4. 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. S2CID 140665908.
  5. 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.
  6. 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.
  7. 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

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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