Where: British Columbia, Canada (49.0° N, 124.0° W: paleocoordinates 52.7° N, 90.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Sphenoceramus schmidti inoceramid zone, Haslam Formation, Late/Upper Santonian (85.8 - 83.5 Ma)

• The bivalves Sphenoceramus elegans and S. cf. orientalis are also noted continuously throughout this section, occasionally co-occurring with the crinoids. Thus, the stratigraphic interval exposed along 'Step Creek' can be assigned to the lower, Sphenoceramus elegans Subzone of the S. schmidti Zone.

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; lithified siltstone

Size class: macrofossils

Collected by C. Ruttan; reposited in the GSC

Primary reference: J. W. Haggart and R. Graham. 2018. The crinoid Marsupites in the Upper Cretaceous Nanaimo Group, British Columbia: resolution of the Santonian-Campanian boundary in the North Pacific Province. Cretaceous Research 87:277-295 [M. Clapham/M. Clapham]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 210552: authorized by Matthew Clapham, entered by Matthew Clapham on 03.06.2020

Creative Commons license: CC BY (attribution)