Where: Kochi, Japan (33.5° N, 133.3° E: paleocoordinates 41.1° N, 135.3° E)
• coordinate estimated from map
• local area-level geographic resolution
When: Monobegawa Group, Neocomian (145.0 - 125.8 Ma)
• Lower Monobegawa Group, Upper Neocomian
• formation-level stratigraphic resolution
Environment/lithology: marine; conglomerate and shale
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 40476: authorized by Martin Aberhan, entered by Sabine Nürnberg on 24.06.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
| Bivalvia | |
Nipponitrigonia sakamotoensis, Nipponitrigonia convexa, Nipponitrigonia kikuchiana, Rutitrigonia yeharai
Nipponitrigonia kikuchiana Yokoyama 1891 clam
Rutitrigonia yeharai clam | |