Where: Japan (44.1° N, 141.8° E: paleocoordinates 50.4° N, 132.1° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Middle Haborogawa Formation (Yezo Group), Santonian (86.3 - 83.6 Ma)

• STRATIGRAPHIC RELATIONS: Unit Uf-g, Middle Haborogawa Fm overlain by Upper Haborogawa Fm of the Yezo Gp and the Campanian-Maastrichtian Pankezawa Fm. THICKNESS: 450 m. AGE: Santonian, Inoceramus amakusensis zone. STRATIGRAPHIC POSITION: At middle of section, at top of 250 m thick Middle Haborogawa Fm. Correlates closely to PBDB 62332 (DF0065) and 62333 (DF0067), ~20 m above PBDB 62331 (DF0079).

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; lithified, bioturbated, sandy mudstone

Size class: macrofossils

Collection methods: COLLECTOR: Assumed to be collected by authors (Moriya and Hirano) and supplemented by collections of an earlier author Toshimitsu (see Toshimitsu 1988). REPOSITORY: Unknown repository, posibly Waseda University, Japan.

Primary reference: K. Moriya and H. Hirano. 2001. Cretaceous stratigraphy in the Chikubetsu area, Hokaido. Journal of the Geological Society of Japan 107(3):199-214 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 62334: authorized by Austin Hendy, entered by Austin Hendy on 18.07.2006

Creative Commons license: CC BY (attribution)