Where: Russian Federation (62.5° N, 70.0° E: paleocoordinates 59.4° N, 65.2° E)
• local area-level geographic resolution
When: Surites analogus zone, Berriasian (145.0 - 139.8 Ma)
Environment/lithology: marine; siliciclastic sediments
Size class: macrofossils
Collection methods: Almost all over the West Siberian Plain, the Berriasian stage is overlain by a thick series of younger sediments, and thus, studies are done on cores of deep boreholes. Collections are grouped according to ammonite zones.
Primary reference: V. N. Saks, ed. 1975. The Jurassic-Cretaceous Boundary and the Berriasian Stage in the Boreal Realm. 1-319 [M. Patzkowsky/K. Layou/P. Wagner]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 2507: authorized by Mark Patzkowsky, entered by Karen Layou on 07.07.1999, edited by Austin Hendy
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
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Bivalvia | |
Buchia volgensis Lahusen 1888 scallop
Buchia terebratuloides Lahusen 1888 scallop
Buchia okensis Pavlow 1907 scallop | |
Foraminifera | |
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"Marginulina robusta" = Cristellaria (Marginulina), "Marginulina zaspelovae" = Cristellaria (Marginulina)
"Marginulina robusta" = Cristellaria (Marginulina)
"Marginulina zaspelovae" = Cristellaria (Marginulina) | |
Nodosariata | |
Foraminifera | |
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