Bukachacha Formation

Bukachacha Formation Stratigraphic range: Barremian ~129–125 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Lithology
Primary	Mudstone
Other	Tuff
Location
Coordinates	53°00′N 116°54′E / 53.0°N 116.9°E / 53.0; 116.9Coordinates: 53°00′N 116°54′E / 53.0°N 116.9°E / 53.0; 116.9
Approximate paleocoordinates	56°42′N 114°54′E / 56.7°N 114.9°E / 56.7; 114.9
Region	Zabaykalsky Krai
Country	Russia
Type section
Named for	Bukachacha
Bukachacha Formation (Russia)

The Bukachacha Formation is a geological formation in Zabaykalsky Krai, Russia dating to the Early Cretaceous (Barremian). The tuffaceous mudstones of the formation were deposited in a lacustrine environment.

Fossil content[]

The formation has provided fossil insects:^[1]

• Coleoptera
  • Coptoclavidae
    • ^[2]
• Trichoptera
  • Phryganeidae
    • ^[3]
• • • ^[4]

See also[]

• List of fossiliferous stratigraphic units in Russia
• Batylykh Formation, contemporaneous fossiliferous formation of Buryatia

References[]

Bibliography[]

• Sukatsheva, I.D. 2016. The family Phryganeidae (Insecta, Trichoptera) from the Mesozoic and Cenozoic of Asia (with a brief worldwide overview of the fossil caddisfly fauna). Paleontological Journal 50. 396–405. Accessed 2020-07-07.
• Ponomarenko, A.G. 1990. Beetles, Scarabaeida, in Pozdne-Mezozoyskie Nasekomye Vostochnogo Zabaykal'ya. A.P. Rasnitsyn (ed.), Akademiya Nauk SSSR, Trudy Paleontologicheskogo Instituta 239. 39–82.
• Sinitshenkova, N.D. 1990. Mayflies. Ephemerida, in Pozdne-Mezozoyskie Nasekomye Vostochnogo Zabaykal'ya. A. P. Rasnitsyn (ed.), Akademiya Nauk SSSR, Trudy Paleontologicheskogo Instituta 239. 14–20.