North of Kamikatetsu, Kikai Island (Pleistocene of Japan)

Where: Japan (28.3° N, 129.9° E: paleocoordinates 28.3° N, 129.9° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Wan Formation, Middle Pleistocene (0.8 - 0.1 Ma)

• Initially dated radiometrically at 82,000 +/- 2000 years BP (Omura, 1983), but this is perhaps too young. According to Humblet et al. (2009), The topography of Kikai-jima is characterised by three main Pleistocene terraces: Hyakunodai (180–225 m), Nagamine (120–130 m), and Kawamine (20–80 m) (Nakagawa, 1969). The Kawamine terrace age has been measured by electron spin resonance (ESR) dating technique as 0.39–0.65 Ma (Loc. 4 in Ikeda et al., 1991).

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; unlithified grainstone

• Fore-reef in excess of 50 meters deep

Size class: macrofossils

Collection methods: Repository: University Museum, University of Tokyo (UMUT) and Institute of Geology and Paleontology, Tohoku University, Sendai (IGPS)

Primary reference: K. Endo. 1989. Growth and life mode of a Pleistocene brachiopod Kikaithyris hanzawai (Yabe). Transactions and Proceedings of the Paleontological Society of Japan, N.S. 156:286-290 [M. Clapham/M. Clapham]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 190520: authorized by Matthew Clapham, entered by Matthew Clapham on 08.12.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Terebratulida - Frenulinidae