Where: Siberia, Russian Federation (73.0° N, 113.0° E: paleocoordinates 75.5° N, 91.9° E)
• outcrop-level geographic resolution
When: Hectoroceras kochi zone, X Member, Berriasian (145.0 - 139.8 Ma)
• exposure 33, layer 23-27; exposure 32, layers 16-18; exposure 31, layers 1a-2
• member-level stratigraphic resolution
Environment/lithology: marine; burrowed, pyritic, gray shale
Size class: macrofossils
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 2479: authorized by Mark Patzkowsky, entered by Karen Layou on 06.07.1999, edited by Austin Hendy
Creative Commons license: CC BY (attribution)
Taxonomic list
Foraminifera | |
"Marginulina pyramidalis" = Cristellaria (Marginulina)
"Marginulina pyramidalis" = Cristellaria (Marginulina) | |
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Nodosariata | |
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Cephalopoda | |
Hectoroceras kochi, Praetollia maynci, aff. Praetollia maynci, Praetollia contigua, Praetollia sp., Subcraspedites sp., Surites sp.
Hectoroceras kochi Spath 1947 ammonite
Praetollia maynci ammonite
Praetollia sp. ammonite
Subcraspedites sp. Spath 1924 ammonite | |
Bivalvia | |
Nucula sp. Lamarck 1799 nut clam | |
Lima sp. Bruguière 1797 file clam | |
cf. Buchia unschensis, Buchia sp., Buchia sp., aff. Buchia robusta, cf. Buchia okensis, aff. Buchia uncitoides, cf. Buchia terebratuloides, Buchia volgensis
Buchia sp. Rouillier 1845 scallop
Buchia volgensis Lahusen 1888 scallop | |
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Malacostraca | |
Decapoda indet. Latreille 1802 decapod |