Where: Hokkaido, Japan (45.0° N, 142.2° E: paleocoordinates 49.0° N, 130.8° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: E Formation (Hakobuchi Group), Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• 2 samples

• group of beds-level stratigraphic resolution

Environment/lithology: basinal (); lithified siltstone and lithified sandstone

Size class: microfossils

Primary reference: K. Iwata, Y. Watanabe, and J. Tajika. 1992. Radiolarian biostratigraphic study of the Hakobuchi Group in the Nakatonbetsu area, north Hokkaido. Report of the Geological Survey of Hokkaido 63:1-21 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 95793: authorized by Wolfgang Kiessling, entered by Uta Merkel on 28.04.2010

Creative Commons license: CC BY (attribution)