Where: British Columbia, Canada (49.2° N, 124.1° W: paleocoordinates 52.9° N, 90.0° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Eubostrychoceras elongatum ammonoid zone, Haslam Formation, Late/Upper Santonian (85.8 - 83.5 Ma)
• The assemblage found at the quarry is strongly suggestive of the uppermost part of the Eubostrychoceras elongatum Zone, particularly the Eupachydiscus haradai Subzone. Trigonometric calculations show that the Doumont Road Upper Quarry locality is approximately 30 m stratigraphically below the Lower Quarry found down-slope to the east; the latter has produced the early Campanian form Pseudoschloenbachia umbulazi (Baily, 1855).
• group of beds-level stratigraphic resolution
Environment/lithology: coastal; lithified siliciclastic sediments
Size class: macrofossils
Collected by R. Graham
Collection methods: surface (float)
• Repository: Royal British Columbia Museum
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 134731: authorized by Carrie Schweitzer, entered by Evaline Johnson on 14.10.2012
Creative Commons license: CC BY (attribution)
Taxonomic list
Crinoidea | |
Marsupites testudinarius Schlotheim 1820 Feather star |