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Khilok Formation

Coordinates: 50°42′N 107°54′E / 50.7°N 107.9°E / 50.7; 107.9
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Khilok Formation
Stratigraphic range: Aptian
~120–113 Ma
TypeGeological formation
Thickness900–1,400 m (3,000–4,600 ft)
Lithology
PrimaryTrachybasalt
OtherConglomerate, sandstone
Location
Coordinates50°42′N 107°54′E / 50.7°N 107.9°E / 50.7; 107.9
Approximate paleocoordinates52°42′N 105°36′E / 52.7°N 105.6°E / 52.7; 105.6
RegionBuryatia
Country Russia
Khilok Formation is located in Russia
Khilok Formation
Khilok Formation (Russia)

The Khilok Formation is an Early Cretaceous geologic formation in Buryatia, Russia. While the lower portion of the formation consists of sandstone and conglomerates, the upper portion of the formation largely consists of trachybasalt, these deposits have been dated to the Aptian.[1] A thin 20 cm bed is known from the formation containing the remains of numerous indeterminate vertebrates, including dinosaur and pterosaurs and an indeterminate species of Kirgizemys.[2]

Fossil content

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The following fossils were reported from the formation:[3]

Reptiles
Amphibians
Fish

See also

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References

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  1. ^ Zavialova, Natalia; Markevich, Valentina; Bugdaeva, Eugenia; Polevova, Svetlana (September 2011). "The ultrastructure of fossil dispersed monosulcate pollen from the Early Cretaceous of Transbaikalia, Russia". Grana. 50 (3): 182–201. Bibcode:2011Grana..50..182Z. doi:10.1080/00173134.2011.611530. ISSN 0017-3134.
  2. ^ "Krasnyi Yar, Khilok River (Cretaceous of Russian Federation)". Paleobiology Database.
  3. ^ Khilok Formation