Takibe Area, Wakamiya Formation, Honshu (Cretaceous of Japan)

Where: Yamaguchi, Japan (34.3° N, 130.9° E: paleocoordinates 44.1° N, 132.1° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Wakamiya Formation (Kwanmon Group), Early/Lower Cretaceous (145.0 - 100.5 Ma)

• Lower Cretaceous (prec. unknown)

• 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 40650: authorized by Martin Aberhan, entered by Sabine N├╝rnberg on 26.06.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

 Cardiida - Sphaeriidae
Sphaerium anderssoni fingernail clam
subsp. jeholense
 Trigoniida - Trigonioididae
Trigonioides (Wakinoa) wakinoensis clam
subsp. intermedius