MDM Quarry 17, Baker pit (Cretaceous of Canada)

Where: Manitoba, Canada (49.3° N, 98.3° W: paleocoordinates 53.7° N, 63.2° W)

• coordinate based on political unit

• outcrop-level geographic resolution

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

• correlated with Sharon Springs Member in South Dakota and Wyoming by Gill and Cobban (1965) and McNeil and Caldwell (1981)

• member-level stratigraphic resolution

Environment/lithology: basinal (); black, carbonaceous shale

• Pembina was deposited in quiet water well below wave base, probably well removed from contemporary shores, but gypsum damage obscures evidence.
• The lower unit of the Pembina Formation, from which the fossils were collected, is a distinctive series of black, carbonaceous shales interbedded with seams of bentonite.

Size class: macrofossils

Collection methods: quarrying,

Primary reference: E. L. Nicholls, T. T. Tokaryk, and L. V. Hills. 1990. Cretaceous marine turtles from the Western Interior Seaway of Canada. Canadian Journal of Earth Sciences 27(10):1288-1298 [J. Alroy/M. Sommers/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 23337: authorized by John Alroy, entered by Jill Wertheim on 12.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Testudines -
cf. Chelonioidea indet., Toxochelys latiremis
cf. Chelonioidea indet. Baur 1893 sea turtle
Family, genus, species indet.
Toxochelys latiremis Cope 1873 turtle