Where: Hokkaido, Japan (42.8° N, 142.3° E: paleocoordinates 48.7° N, 132.6° E)

• coordinate based on nearby landmark

When: Hakobuchi Sandstone Formation, Senonian (100.5 - 66.0 Ma)

Environment/lithology: marine; sandstone

Size class: macrofossils

Preservation: concretion

Collected by R. Saito

Primary reference: T. Nagao. 1932. Two Tertiary and One Cretaceous Crustacea from Hokkaidô, Japan. Journal of the Faculty of Science, Hokkaido Imperial University. Ser. 4, Geology and mineralogy, 2(1), 15-22 2(1):15-22 [M. Clapham/H. Shin/H. Shin]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 235796: authorized by Matthew Clapham, entered by J Fearon on 01.08.2024

Creative Commons license: CC BY (attribution)