Where: Iwate, Japan (39.9° N, 142.0° E: paleocoordinates 52.6° N, 141.8° E)
• coordinate estimated from map
• local area-level geographic resolution
When: Hiraiga Formation (Miyako Group), Aptian (125.0 - 113.0 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 40315: authorized by Martin Aberhan, entered by Sabine Nürnberg on 22.06.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Lecompteus cf. guerangeri mussel | |
Lopha (Actinostreon) nagaoi oyster | |
"Amphidonte (Ceratostreon) yabei" = Ceratostreon
"Amphidonte (Ceratostreon) yabei" = Ceratostreon oyster | |
Antiquilima ultima file clam | |
Spondylus (Spondylus) decoratus scallop | |
"Glycymeris (? Glycymerita) haipensis" = Glycymerita, Glycymeris (Hanaia) densilineata
"Glycymeris (? Glycymerita) haipensis" = Glycymerita clam | |
Praecaprotina yaegashii rudist | |
Nagaoella corrugata venus clam | |
Anthonya subcantiana clam | |
Nipponitrigonia kikuchiana Yokoyama 1891 clam | |
Mesosaccella insignis pointed nut clam |