The Ialovachsk or Yalovach Formation is a geologic formation in Kyrgyzstan, Tajikistan and Uzbekistan dating to the Santonian age of the Cretaceous period.Weishampel et al., 2004, pp.517-607
Fossil content Fossil dinosaur eggs as well as pterosaur, dinosaur, turtle and crocodyliforme remains have been recovered from the formation.Yalovach Formation at Fossilworks.org
The following fossils have been reported from the formation:
Amphibians Eopelobates sp. Eoscapherpeton superum
Mammals ?Kulbeckia kulbecke
Snakes Squamata indet.
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 List of dinosaur-bearing rock formations List of stratigraphic units with dinosaur trace fossils Dinosaur eggs
References
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