Natsugayoi, Yahagi town, Rikuzen-Takata City, Iwate Prefecture (Permian of Japan)

Where: Japan (39.1° N, 141.5° E: paleocoordinates 17.9° N, 108.8° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Nakadaira Formation, Artinskian (290.1 - 279.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified shale

Size class: macrofossils

Primary reference: M. Ehiro. 1995. Cephalopod fauna of the Nakadaira Formation (Lower Permian) in the southern Kitakami Massif, northeast Japan. Transactions and Proceedings of the Paleontological Society of Japan, N.S. 179:184-192 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 107623: authorized by Matthew Clapham, entered by Matthew Clapham on 11.04.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Nautilida - Tainoceratidae
Foordiceras sp., ? Foordiceras sp., Pleuronautilus sp.
Foordiceras sp. Hyatt 1893
? Foordiceras sp. Hyatt 1893
Pleuronautilus sp. von Mojsisovics 1882
 Nautilida - Grypoceratidae
Stearoceras sp.
Stearoceras sp. Hyatt 1893
 Prolecanitida - Medlicottiidae
Artinskia sp.
Artinskia sp. Karpinsky 1926 ammonite
 Goniatitida - Agathiceratidae
Agathiceras sp.
Agathiceras sp. Gemmellaro 1887 ammonite