Where: Japan (39.0° N, 141.5° E: paleocoordinates 21.9° N, 112.5° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Hoso-o Formation, Roadian (272.3 - 268.8 Ma)

• Loose blocks probably derived from the middle part of the Hosoo Formation

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified mudstone

Size class: macrofossils

Primary reference: M. Ehiro and A. Misaki. 2005. Middle Permian ammonoids from the Kamiyasse-Imo district in the southern Kitakami Massif, northeast Japan. Paleontological Research 9(1):1-14 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 107608: authorized by Matthew Clapham, entered by Matthew Clapham on 11.04.2011

Creative Commons license: CC BY (attribution)