Also known as Obira area, northwestern Hokkaido

Where: Sapporo, Japan (44.1° N, 141.7° E: paleocoordinates 50.3° N, 132.1° E)

• coordinate estimated from map

When: Early/Lower Santonian (85.8 - 83.5 Ma)

Environment/lithology: marine; lithified, tuffaceous claystone

Size classes: macrofossils, mesofossils

Preservation: concretion

Primary reference: Y. Kanie, Y. Hasegawa, Y. Okazaki and M. Tatematsu. 1998. Vampyromorph: past and present - Cretaceous Vampyromorph (Coleoidea: Cephalopoda) as the diet of plesiosaurs. Bulletin of Gunma Museum of Natural History 2:11-22 [M. Carrano/H. Street/H. Street]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 98848: authorized by Matthew Carrano, entered by Hallie Street on 21.10.2010

Creative Commons license: CC BY (attribution)