Kashima (Eocene of Japan)

Where: Hokkaido, Japan (43.1° N, 141.8° E: paleocoordinates 45.3° N, 138.1° E)

• coordinate estimated from map

When: Poronai Formation, Priabonian (38.0 - 33.9 Ma)

• originally Upper Oligocene

•fifth zone of the Poronai Formation

Environment/lithology: marine; lithology not reported

• cold sea environment

Size class: macrofossils

Primary reference: S. Applegate and T. Uyeno. 1968. The First Discovery of a Fossil Tooth belonging to the Shark Genus Heptracnchias, with a New Pristiophorus Spine, Both from the Oligocene of Japan. Bulletin of the National Science Museum, Tokyo 11(2):195-201 [M. Uhen/B. Shipps/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 202922: authorized by Mark Uhen, entered by Mark Uhen on 23.07.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Chondrichthyes
 Pristiophoriformes - Pristiophoridae
Pristiophorus lineatus n. sp.
Pristiophorus lineatus n. sp. Applegate and Uyeno 1968 saw shark
 Hexanchiformes - Hexanchidae
Heptranchias ezoensis n. sp.
Heptranchias ezoensis n. sp. Applegate and Uyeno 1968 sevengill shark