Pembina Mountain region, CFDC site 23 (Cretaceous to of Canada)

Also known as Manitoba Escarpment; Morden; Miami Pembina Member, Vermilion River Formation

Where: Manitoba, Canada (49.2° N, 98.1° W: paleocoordinates 53.5° N, 63.1° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Millwood Member (Pierre Shale Formation), Early/Lower Campanian to Early/Lower Campanian (83.5 - 70.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; concretionary, gray, silty claystone

• soft, olive gray, silty, montmorillonite clay with abundant calcareous concretions

Size class: macrofossils

Primary reference: K. Aotsuka and T. Sato. 2016. Hesperornithiformes (Aves: Ornithurae) from the Upper Cretaceous Pierre Shale, Southern Manitoba, Canada. Cretaceous Research 63:154-169 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 193928: authorized by Philip Mannion, entered by Philip Mannion on 07.06.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Aves
 Ornithurae -
Hesperornithiformes indet.
Hesperornithiformes indet. Fürbringer 1888 bird
 Hesperornithiformes - Hesperornithidae
Hesperornithidae indet., Hesperornis sp., Hesperornis chowi, Hesperornis cf. rossicus
Hesperornis sp. Marsh 1872 bird
Hesperornis chowi Martin and Lim 2002 bird
Hesperornis cf. rossicus Nessov and Yarkov 1993 bird
CFDC B.2010.01.23