Where: Japan (36.5° N, 139.4° E: paleocoordinates 20.0° N, 109.9° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Nabeyama Formation, Roadian (272.3 - 268.8 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Primary reference: T. Kobayashi and T. Hamada. 1984. The Middle and Upper Permian trilobites from the Akasaka Limestone in Gifu Prefecture, west Japan. Proceedings of the Japan Academy, Series B 60:1-4 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 110421: authorized by Matthew Clapham, entered by Matthew Clapham on 07.06.2011

Creative Commons license: CC BY (attribution)