Akkeshi Area, Hamanaka Formation, Hokkaido (Cretaceous to of Japan)

Where: Kushiro, Japan (43.0° N, 144.9° E: paleocoordinates 48.0° N, 133.8° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Hamanaka Formation (Nemuro Group), Campanian to Campanian (83.6 - 66.0 Ma)

• Campanian or Maastrichtian

• formation-level stratigraphic resolution

Environment/lithology: marine

Size class: macrofossils

Preservation: cast, mold/impression

Primary reference: I. Hayami. 1975. A systematic survey of the Mesozoic Bivalvia from Japan. The University Museum, The University of Tokyo, Bulletin (10) [M. Aberhan/S. Nurnberg/S. Nurnberg]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 40210: authorized by Martin Aberhan, entered by Sabine N├╝rnberg on 20.06.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Carditida - Astartidae