Where: Japan (38.7° N, 141.5° E: paleocoordinates 38.5° N, 118.7° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Columbites parisianus ammonoid zone, Osawa Formation, Spathian (251.3 - 247.2 Ma)

• Middle part of Osawa Fm

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Preservation: mold/impression

Primary reference: M. Murata. 1973. Triassic fossils from the Kitakami Massif, northeast Japan, Part 1, Pelecypods and Brachiopods of the Osawa and the Fukkoshi Formations. Science Reports of the Tohoku University. Second Series, Geology. Special Volume (Hatai Memorial Volume) 6:267-275 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 113889: authorized by Matthew Clapham, entered by Matthew Clapham on 06.08.2011

Creative Commons license: CC BY (attribution)