Bukobay Svita

Bukobay Svita
Stratigraphic range: Ladinian
Bukobay Svita; Stratigraphic range: Ladinian
	"Mastodonsaurus" torvus, an index fossil of the Bukobay Svita / Gorizont
Type	Stratigraphic Formation
Overlies	Donguz Svita
Area	Orenburg Oblast
Lithology
Primary	clay, siltstone
Other	sandstone

The Bukobay Svita (also anglicized as "Bukobay Formation") is a Middle Triassic geological unit in Russia. It is composed primarily of red or grey lacustrine sediments, reconstructing a humid and marshy depositional environment. Bukobay is the youngest section of a Triassic terrestrial succession exposed south of the Ural Mountains. It is equivalent to a biostratigraphic unit, the Bukobay Gorizont, which is also called the "Bukobay Horizon" or "Mastodonsaurus" fauna). Notable components of the Bukobay fauna include "Mastodonsaurus" torvus (a giant capitosaur amphibian), Elephantosaurus jachimovitschi (a large dicynodont), and Chalishevia cothurnata (the youngest known erythrosuchid). The flora is also diverse, including Equisetites arenaceus (a species of giant horsetails) and Ladinian-age palynomorphs.[1][2]

References

Tverdokhlebov, Valentin P.; Tverdokhlebova, Galina I.; Surkov, Mikhail V.; Benton, Michael J. (2003). "Tetrapod localities from the Triassic of the SE of European Russia". Earth-Science Reviews. 60 (1): 1–66. doi:10.1016/S0012-8252(02)00076-4. ISSN 0012-8252.
Tverdokhlebov, V. P.; Sennikov, A. G.; Novikov, I. V.; Ilyina, N. V. (May 2020). "The Youngest Triassic Land Vertebrate Assemblage of Russia: Composition and Dating". Paleontological Journal. 54 (3): 297–310. doi:10.1134/S0031030120030156. ISSN 1555-6174.

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[1] Tverdokhlebov, Valentin P.; Tverdokhlebova, Galina I.; Surkov, Mikhail V.; Benton, Michael J. (2003). "Tetrapod localities from the Triassic of the SE of European Russia". Earth-Science Reviews. 60 (1): 1–66. doi:10.1016/S0012-8252(02)00076-4. ISSN 0012-8252.

[2] Tverdokhlebov, V. P.; Sennikov, A. G.; Novikov, I. V.; Ilyina, N. V. (May 2020). "The Youngest Triassic Land Vertebrate Assemblage of Russia: Composition and Dating". Paleontological Journal. 54 (3): 297–310. doi:10.1134/S0031030120030156. ISSN 1555-6174.