Where: Japan (36.1° N, 138.8° E: paleocoordinates 48.3° N, 139.7° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Sebayashi Formation, Early/Lower Aptian (125.5 - 122.5 Ma)

• lower part of the formation

• group of beds-level stratigraphic resolution

Environment/lithology: estuary or bay; lithified, black shale

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 67143: authorized by Wolfgang Kiessling, entered by Uta Merkel on 10.11.2006