Where: Russian Federation (48.7° N, 142.6° E: paleocoordinates 53.5° N, 129.6° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Bykov Formation, Late/Upper Santonian to Late/Upper Santonian (85.8 - 70.6 Ma)

• B3 member. A change in the fossil assemblage in the upper part of the B3 Unit, in which Menuites naumanni and Sphenoceramus orientalis are common, suggests that this portion of the unit is correlated to the uppermost Santonian or lowermost Campanian stage.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, concretionary sandstone

Size class: macrofossils

Collection methods: Repository: National Museum of Nature and Science, Tsukuba (NMNS)

Primary reference: H. Maeda, Y. Shigeta, A. G. S. Fernando and H. Okada. 2005. Stratigraphy and fossil assemblages of the Upper Cretaceous system in the Makarov area, southern Sakhalin, Russian Far East. National Science Museum Monographs 31:25-120more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 237019: authorized by Matthew Clapham, entered by Matthew Clapham on 11.11.2024

Creative Commons license: CC BY (attribution)