Where: Japan (39.0° N, 141.5° E: paleocoordinates 22.9° N, 113.2° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Ochiai Formation, Roadian to Roadian (272.3 - 264.3 Ma)

• Judging from the lithofacies of the matrix, the geology around this locality, and the associated ammonoid fauna, it was probably derived from the middle - upper portion (Roadian-Wordian; Middle Permian) of the lower member of the Ochiai Formation.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified shale

Size class: macrofossils

Collection methods: surface (float),

Primary reference: S. Niko and M. Ehiro. 2002. Permian orthoconic cephalopods of the Ochiai Formation in the southern Kitakami Mountains, northeast Japan. Paleontological Research 6:385-389 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 116007: authorized by Matthew Clapham, entered by Matthew Clapham on 05.09.2011

Creative Commons license: CC BY (attribution)