Where: Iwate, Japan (39.9° N, 141.9° E: paleocoordinates 53.1° N, 140.9° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Hiraiga Formation (Miyako Group), Late/Upper Aptian (122.5 - 113.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: shoreface; calcareous sandstone

Size class: macrofossils

Primary reference: T. Komatsu, K. Yoshihara, M. H. Dick, R. Takashima, A. Ostrovsky and H. Nishi. 2008. Habitats of Bivalves in the Lower-Cretaceous Aptian Tanohata and Aptian to Albian Hiraiga Formations, Iwate Prefecture, Northeastern Japan. In H. Okada, S. F. Mawatari, N. Suzuki, P. Gautam (eds.), Origin and Evolution of Natural Diversity, Proceedings of International Symposium “The Origin and Evolution of Natural Diversity”, 1–5 October 2007, Sapporo 163-170 [M. Aberhan/T. Schossleitner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 142443: authorized by Martin Aberhan, entered by Thomas Schossleitner on 11.04.2013

Creative Commons license: CC BY (attribution)