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,, pronounced or the Kyrgyz Republic, is a landlocked country in Central Asia. Kyrgyzstan is bordered by Kazakhstan to the north, Uzbekistan to the west, Tajikistan to the south, and the People's Republic of China to the east. ...

Tajikistan Tajikistan (, ; tg, Тоҷикистон, Tojikiston; russian: Таджикистан, Tadzhikistan), officially the Republic of Tajikistan ( tg, Ҷумҳурии Тоҷикистон, Jumhurii Tojikiston), is a landlocked country in Centr ...

and

Uzbekistan Uzbekistan (, ; uz, Ozbekiston, italic=yes / , ; russian: Узбекистан), officially the Republic of Uzbekistan ( uz, Ozbekiston Respublikasi, italic=yes / ; russian: Республика Узбекистан), is a doubly landlocked cou ...

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 mya. The ...

age of the

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of th ...

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 period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the evolution of dinosaurs is t ...

eggs as well as

pterosaur Pterosaurs (; from Greek ''pteron'' and ''sauros'', meaning "wing lizard") is 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 to ...

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

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

Fossilworks Fossilworks is a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals ...

.org The following fossils have been reported from the formation: ;Amphibians * '' Eopelobates sp.'' * '' Eoscapherpeton superum'' ;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 * Azhdarchidae indet. * '' ?Azhdarcho sp.'' * Aves indet. * '' Kansajsuchus extensus'' * ?Pterosauria indet. * Squamata indet. * '' Tadzhikosuchus macrodentis''

References

Bibliography

* {{ISBN, 0-520-24209-2

Fossil content

See also

References

Bibliography

Further reading