Where: Japan (38.4° N, 140.3° E: paleocoordinates 39.8° N, 138.7° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Ohyr Formation, Late/Upper Miocene (11.6 - 5.3 Ma)

• STRATIGRAPHIC RELATIONS: From Ohyr Fm, which overlies the Kuzusawa Siltstone Mbr of the Hongo Fm (Late Miocene) and is overlain by the Inazawayama Sst Mbr of the Aterazawa Fm (Late Miocene). THICKNESS: From bed within unit that attains a thickness of ~150 m. AGE: Late Miocene on the basis of molluscan biostratigraphy. STRATIGRAPHIC POSITION: From upper middle part of formation.

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified, bioturbated sandstone

Size class: macrofossils

Preservation: cast, mold/impression

Collection methods: surface (in situ),

• COLLECTOR: K. Kudo (1984) and presumably the authors recollecting (K. Ogasawara, T. Saito, S. Takahashi). REPOSITORY: Institute of Geology and Paleontology. Tohoku Universiy, Sendai (IGPS).

Primary reference: K. Ogasawara, T. Saito, and S. Takahashi. 1985. Late Miocene molluscs from the northwestern part of Yamagata Basin, Yamagata Prefecture, Tohoku District, Japan. Saito Ho-on Kai Museum of Natural History Research Bulletin 53:21-35 [A. Hendy/A. Hendy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 71050: authorized by Austin Hendy, entered by Austin Hendy on 15.04.2007

Creative Commons license: CC BY (attribution)