R5231, Obirashibe River, Obira area (Cretaceous of Japan)

Where: Japan (44.1° N, 142.0° E: paleocoordinates 51.8° N, 134.2° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Inoceramus kamuy inoceramid zone, Hikagenosawa Formation, Early/Lower Turonian (93.5 - 89.3 Ma)

• PJW: GIven as Inoceramus aff. saxonicus zone, but Inoceramus aff. saxonicus is now Inoceramus kamuy.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, sandy siltstone

Size class: macrofossils

Preservation: mold/impression

Collection methods: Repository: Kyushu University Museum, Fukuoka, Japan

Primary reference: K. Tanabe. 2022. Late Cretaceous dimorphic scaphitid ammonoid genus Yezoites from the circum-North Pacific regions. Paleontological Research 26:233-269 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 226884: authorized by Matthew Clapham, entered by Matthew Clapham on 05.08.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Scaphitidae
Yezoites puerculus Jimbo 1894 ammonite