Yubari Area, Middle Yezo Group (Member L2), Hokkaido (Cretaceous of Japan)

Where: Ishikari, Japan (43.0° N, 142.0° E: paleocoordinates 52.5° N, 139.2° E)

• coordinate estimated from map

• local area-level geographic resolution

When: L2 Member, Albian (113.0 - 100.5 Ma)

• member-level stratigraphic resolution

Environment/lithology: marine; gray shale and sandstone

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 40605: authorized by Martin Aberhan, entered by Sabine N├╝rnberg on 26.06.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Myalinida - Inoceramidae
"Inoceramus (Birostrina) concentricus" = Inoceramus (Actinoceramus) concentricus Parkinson 1819 clam
subsp. subsulcatus