Osawa, Motoyoshi-cho (Subcolumbites zone) (Triassic of Japan)

Where: Japan (38.8° N, 141.5° E: paleocoordinates 38.5° N, 118.8° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Spathian (251.3 - 247.2 Ma)

• Subcolumbites perrinismithi zone

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Preservation: mold/impression

Collection methods: Repository: Department of Geology, Kaguwa University

Primary reference: Y. Bando and S. Shimoyama. 1974. Late Scythian ammonoids from the Kitakami Massif. Transactions and Proceedings of the Paleontological Society of Japan, N.S. 94:293-312 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 186958: authorized by Matthew Clapham, entered by Matthew Clapham on 08.07.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ceratitida - Columbitidae
Subcolumbites sp. Spath 1930 ceratite
Subcolumbites perrinismithi Arthaber 1908 ceratite
 Ceratitida - Dinaritidae
Stacheites sp. Kittl 1903 ceratite
 Ceratitida - Sibiritidae
? Prohungarites sp. Spath 1934 ceratite
 Phylloceratida - Ussuritidae
Eophyllites sp. Spath 1930 ammonite