Where: Japan (33.6° N, 133.6° E: paleocoordinates 42.6° N, 135.6° E)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Ryoseki Formation, Hauterivian (132.9 - 129.4 Ma)
• upper part of the formation
• group of beds-level stratigraphic resolution
Environment/lithology: estuary or bay; lithified sandstone
Size class: macrofossils
Primary reference: T. Kozai. 1986. Early Cretaceous Pulsidis (Bivalvia) from Japan. Transactions and Proceedings of the Palaeontological Society of Japan 144:479-489 [W. Kiessling/U. Merkel]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 67156: authorized by Wolfgang Kiessling, entered by Uta Merkel on 10.11.2006
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Costocyrena otsukai clam | |
Pulsidis nagatoensis clam |