Where: Iwate, Japan (40.0° N, 141.8° E: paleocoordinates 54.2° N, 138.5° E)
• coordinate estimated from map
• local area-level geographic resolution
When: Aketo Formation (Miyako Group), Early/Lower Albian (112.0 - 109.0 Ma)
• formation-level stratigraphic resolution
Environment/lithology: marine; calcareous 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 40555: authorized by Martin Aberhan, entered by Sabine Nürnberg on 25.06.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Mesosaccella insignis pointed nut clam | |
Gervillaria miyakoensis oyster | |
Limatula nagaoi file clam
Ctenoides subrapa file clam | |
? Eburneopecten miyakoensis scallop
Chlamys cf. subacuta Lamarck 1819 scallop | |
? Neithea aketoensis scallop
Neithea (Neithea) nipponica scallop | |
Cucullaea (Idonearca) transversa Nagao 1934 clam | |
? Lucinoma kotoi clam | |
Nagaoella corrugata venus clam | |
Anthonya subcantiana clam | |
Astarte (Trautscholdia) minor, Astarte (? Leckhamptonia) subomalioides, Eriphyla (Eriphyla) miyakoensis, Eriphyla (Eriphyla) pulchella
Astarte (Trautscholdia) minor Lea 1833 clam |