IZM-4, Hakosaku (Cretaceous of Japan)

Where: Japan (34.3° N, 135.2° E: paleocoordinates 42.4° N, 123.9° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Shindachi Formation (Izumi Group), Maastrichtian (72.1 - 66.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, nodular siliciclastic sediments

Size class: macrofossils

Collected by Miyamoto

Primary reference: H. Collins, Y. Kanie, and H. Karasawa. 1993. Late Cretaceous crabs from Japan. Transactions and Proceedings of the Paleontological Society of Japan, N.S. 172:292-310 [C. Schweitzer/E. Johnson/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 185020: authorized by Matthew Clapham, entered by Matthew Clapham on 05.04.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Malacostraca
 Decapoda - Retroplumidae
Archaeopus ezoensis Nagao 1941 crab