Where: Japan (39.0° N, 141.6° E: paleocoordinates 35.0° N, 118.1° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Kanayashiki Member (Toyoma Formation), Changhsingian (254.2 - 252.2 Ma)

• Block of grey, coarse-grained sandstone

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, coarse-grained, gray sandstone

Size class: macrofossils

Preservation: cast, mold/impression

Collected by J. Tazawa, N. Minoura in 1973

Primary reference: J. Tazawa. 1982. Oldhamina from the Upper Permian of the Kitakami Mountains, Japan and its Tethyan Province distribution. Transactions and Proceedings of the Paleontological Society of Japan, N.S. 128:445-451 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 118937: authorized by Matthew Clapham, entered by Matthew Clapham on 18.10.2011

Creative Commons license: CC BY (attribution)