YEZ-7, junction of Kanajirisawa and Obirashibe-gawa (Cretaceous of Japan)

Where: Japan (44.1° N, 141.8° E: paleocoordinates 52.0° N, 134.3° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Inoceramus hobetsuensis inoceramid zone, Yezo Group, Turonian (93.9 - 89.8 Ma)

• Pebble nodule from the MI? Member of the Middle Yezo Group

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, nodular siliciclastic sediments

Size class: macrofossils

Collected by Hayashi

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 185008: authorized by Matthew Clapham, entered by Matthew Clapham on 04.04.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Decapoda - Homolidae
Metahomola brevis n. sp. Collins et al. 1993 crab
 Decapoda - Palaeocorystidae
Notopocorystes (Eucorystes) intermedius, "Notopocorystes (Notopocorystes) japonicus" = Joeranina japonica
"Notopocorystes (Notopocorystes) japonicus" = Joeranina japonica Jimbo 1894 crab
 Decapoda - Retroplumidae
Archaeopus ezoensis Nagao 1941 crab