Omi Area, Otakidani Formation, Honshu (Jurassic of Japan)

Where: Niigata, Japan (37.0° N, 137.8° E: paleocoordinates 46.5° N, 145.4° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Otakidani Formation (Kuruma Group), Late/Upper Toarcian (180.1 - 175.6 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; sandy shale and conglomerate

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 40311: authorized by Martin Aberhan, entered by Sabine N├╝rnberg on 22.06.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Trigoniida - Trigoniidae