Where: Japan (34.2° N, 134.2° E: paleocoordinates 42.6° N, 123.2° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Nakato Shale Formation (Izumi Group), Late/Upper Campanian (83.5 - 70.6 Ma)

• Regarded as Upper Campanian, higher than the Metaplacenticeras subtilistriatum bed

Environment/lithology: marine; lithified, nodular, calcareous mudstone

Size class: macrofossils

Collected by M. Furuichi

• Repository: Kagawa Natural Science Museum

Primary reference: M. Furuichi. 1982. A new nautiloid species from the Upper Cretaceous Izumi Group of Shikoku. Transactions and Proceedings of the Paleontological Society of Japan, N.S. 126:334-340 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 166255: authorized by Matthew Clapham, entered by Matthew Clapham on 06.02.2015

Creative Commons license: CC BY (attribution)