The Ialovachsk or Yalovach Formation is a

geologic formation A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics ( lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exp ...

Kyrgyzstan Kyrgyzstan, officially the Kyrgyz Republic, is a landlocked country in Central Asia lying in the Tian Shan and Pamir Mountains, Pamir mountain ranges. Bishkek is the Capital city, capital and List of cities in Kyrgyzstan, largest city. Kyrgyz ...

Tajikistan Tajikistan, officially the Republic of Tajikistan, is a landlocked country in Central Asia. Dushanbe is the capital city, capital and most populous city. Tajikistan borders Afghanistan to the Afghanistan–Tajikistan border, south, Uzbekistan to ...

and

Uzbekistan , image_flag = Flag of Uzbekistan.svg , image_coat = Emblem of Uzbekistan.svg , symbol_type = Emblem of Uzbekistan, Emblem , national_anthem = "State Anthem of Uzbekistan, State Anthem of the Republ ...

dating to the

Santonian The Santonian is an age in the geologic timescale or a chronostratigraphic stage. It is a subdivision of the Late Cretaceous Epoch or Upper Cretaceous Series. It spans the time between 86.3 ± 0.7 mya ( million years ago) and 83.6 ± 0.7 m ...

age of the

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 mya (unit), million years ago (Mya). It is the third and final period of the Mesozoic Era (geology), Era, as well as the longest. At around 77.1 million years, it is the ...

period.Weishampel et al., 2004, pp.517-607

Fossil content

Fossil

dinosaur Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic Geological period, period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the #Evolutio ...

eggs as well as

pterosaur Pterosaurs are an extinct clade of flying reptiles in the order Pterosauria. They existed during most of the Mesozoic: from the Late Triassic to the end of the Cretaceous (228 million to 66 million years ago). Pterosaurs are the earli ...

turtle Turtles are reptiles of the order (biology), order Testudines, characterized by a special turtle shell, shell developed mainly from their ribs. Modern turtles are divided into two major groups, the Pleurodira (side necked turtles) and Crypt ...

and crocodyliforme remains have been recovered from the formation.Yalovach Formation
at

Fossilworks Fossilworks was a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database, a large relational database assembled by hundreds of paleontologists from around the world. History Fossilworks was cr ...

.org The following fossils have been reported from the formation: ;Amphibians * '' Eopelobates sp.'' * '' Eoscapherpeton superum'' ;Mammals * '' ?Kulbeckia kulbecke'' ;Snakes * Squamata indet. ;Turtles * ''

Adocus foveatus ''Adocus'' is an extinct genus of aquatic turtles belonging to the family Adocidae. Description Species of the genus ''Adocus'' had flattened and smoothly contoured shells with horny sculptured plates. The shells could reach a length of at l ...

'' * '' Anatolemys maximus'' * '' Lindholmemys gravis'' * '' Shachemys baibolatica'' * ''

Trionyx kansaiensis ''Trionyx'' is a genus of softshell turtles belonging to the family Trionychidae. In the past many species in the family were classified in this genus, but today '' T. triunguis'', the African or Nile softshell turtle, is the only extant Extan ...

'' * '' 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 ''Kansajsuchus'' is an extinct genus of paralligatorid mesoeucrocodylian. It is holotype, based on Paleontological Institute of Russian Academy of Sciences, PIN 2399/301, a right premaxilla, one of the bones of the tip of the snout. This spe ...

'' * ?Pterosauria indet. * '' Tadzhikosuchus macrodentis''

References

Bibliography

* {{citation , last1=Weishampel , first1=David B. , author2-link=Peter Dodson , last2=Dodson , first2=Peter , author3-link=Halszka Osmólska , last3=Osmólska , first3=Halszka , year=2004 , title=The Dinosauria, 2nd edition , url=https://books.google.com/books?id=vtZFDb_iw40C , publisher=Berkeley: University of California Press , pages=1–880 , accessdate=2019-02-21 , isbn=0-520-24209-2 , author1-link=David B. Weishampel

Fossil content

See also

References

Bibliography

Further reading