The Bostobe Formation (Kazakh: Boztóbe svıtasy) is a geological formation in Qaraghandy & Qyzylorda, Kazakhastan whose strata date back to the Late Cretaceous (Santonian to early Campanian stages, approximately 85 Ma).

Bostobe Formation
Stratigraphic range: Santonian-early Campanian
~85 Ma
TypeGeological formation
UnderliesAkzhar Formation
OverliesZhirkindek Formation
ThicknessAbout 45 m (148 ft)
Lithology
PrimarySandstone
OtherClaystone
Location
Coordinates45°54′N 64°42′E / 45.9°N 64.7°E / 45.9; 64.7
Approximate paleocoordinates38°42′N 58°00′E / 38.7°N 58.0°E / 38.7; 58.0
RegionQaraghandy & Qyzylorda
Country Kazakhstan
Type section
Named forBostobe River
Bostobe Formation is located in Kazakhstan
Bostobe Formation
Bostobe Formation
Bostobe Formation
Bostobe Formation
Bostobe Formation
Bostobe Formation
Bostobe Formation
Bostobe Formation (Kazakhstan)

The sandstones and claystones of the formation were deposited in estuarine, fluvial-lacustrine and fluvial-deltaic environments.

Dinosaur remains are among the fossils that have been recovered from the formation.[1] The formation is about 45 metres (148 ft) thick and consists primarily of clay with interbeds of sand, representing an estuarine environment.[2]

Fossil content

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Khunnuchelys lophorhothon, a trionychid turtle recovered from the formation, was initially thought to belong to a hadrosaurid dinosaur and classified as cf. Lophorhothon sp.[3]

See also

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References

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  1. ^ Weishampel et al. , 2004, pp.593-600
  2. ^ Kordikova et al., 2001
  3. ^ a b Danilov et al., 2014
  4. ^ Averianov et al., 2014b
  5. ^ Averianov et al., 2014a
  6. ^ a b c Averianov, 2016
  7. ^ Averianov, 2004

Bibliography

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Further reading

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  • A. O. Averianov. 2007. Theropod dinosaurs from Late Cretaceous deposits in the northeastern Aral Sea region, Kazakhstan. Cretaceous Research 28:532-544
  • E. G. Kordikova, S. M. Kurzanov, and G. F. Gunnell. 1997. Unusual dinosaur claw phalanxes from the Upper Cretaceous of the northeastern Aral Sea region, Kazakhstan. Journal of Morphology 232(3):278
  • 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
  • L. A. Nessov. 1988. Late Mesozoic amphibians and lizards of Soviet Middle Asia. Acta Zoologica Cracoviensia 31(14):475-486
  • L. A. Nessov. 1984. Data on late Mesozoic turtles from the USSR. Studia Geologica Salamanticensia, vol. especial 1 (Studia Palaeocheloniologica I) 1:215-223
  • L. A. Nessov. 1981. Amfibii i reptilii v ekosistemakh Mela sredney Azii [Amphibia and reptiles in Cretaceous ecosystems of central Asia]. In I. V. Darevsky (ed.), The Problems of Herpetology. Fifth Herpetological Conference. Abstracts 91–92
  • A. K. Rozhdestvensky. 1964. Novye dannye o mestonakhozhdeniyakh dinozavrov na territorii Kazakhstana i Srednei Azii [New data on occurrences of dinosaurs in Kazakhstan and Central Asia]. Tashkentskii Gosudarstvennyi Universitet, Nauchnye Trudy: Geologiya [Tashkent State University, Scientific Publications: Geology] 234:227-241