Where: Gumma, Japan (36.3° N, 138.7° E: paleocoordinates 44.4° N, 140.8° E)
• coordinate estimated from map
• local area-level geographic resolution
When: Shiroi Formation, Neocomian (145.0 - 125.8 Ma)
• Lower Neocomian, now regarded as lower part of Ishido Formation
• 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 40487: authorized by Martin Aberhan, entered by Sabine Nürnberg on 24.06.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Placunopsis pseudotruncata scallop | |
"Arca (Eonavicula) shinanoensis" = Eonavicula
"Arca (Eonavicula) shinanoensis" = Eonavicula clam | |
Myopholas sp. Douvillé 1908 clam |