Onsen Area, Izumi Group, Shikoku (Cretaceous of Japan)

Where: Ehime, Japan (33.8° N, 132.8° E: paleocoordinates 41.9° N, 122.0° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Izumi Group, Campanian (83.6 - 72.1 Ma)

• Basal part of Izumi Group

• formation-level stratigraphic resolution

Environment/lithology: marine; 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 40325: authorized by Martin Aberhan, entered by Sabine N├╝rnberg on 22.06.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

 Trigoniida - Steinmanellidae
 Trigoniida - Megatrigonioidae