Where: Miyagi, Japan (38.7° N, 141.6° E: paleocoordinates 38.4° N, 118.7° E)

• coordinate estimated from map

When: Osawa Formation (Inai Group), Olenekian (251.2 - 247.2 Ma)

• early Triassic, Scythian

• formation-level stratigraphic resolution

Environment/lithology: marine; calcareous sandstone and shale

Size class: macrofossils

Primary reference: T. Shikama and T. Kamei. 1978. Early Triassic ichthyosaurus, Utatsusaurus hataii gen. et sp. nov, from the Kitakami Massif, northeast Japan. Tohoku University Scientific Report, 2nd series 48(2):77-97 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 87146: authorized by Mark Uhen, entered by Mark Uhen on 06.03.2009

Creative Commons license: CC BY (attribution)