Morden Bentonite Mine (Cretaceous of Canada)

Where: Manitoba, Canada (49.3° N, 98.2° W: paleocoordinates 53.7° N, 63.1° W)

• coordinate estimated from map

• small collection-level geographic resolution

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

• Radiometric age of 81 +/- 3 MA

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, bentonitic, black, carbonaceous shale

Size class: macrofossils

• "well-preserved but disarticulated skull including braincase and first three cervical vertebrae .... selenite-coated collection of isolated partial skull elements and right humerus"

Reposited in the TMP

Primary reference: T. Komishi and M. W. Caldwell. 2009. New material of the mosasaur Plioplatecarpus nichollsae Cuthbertson et al., 2007, clarifies problematic features of the holotype specimen. Journal of Vertebrate Paleontology 29(2):417-436 [M. Carrano/H. Street/F. Aspromonte]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 96685: authorized by Matthew Carrano, entered by Hallie Street on 25.06.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Squamata - Mosasauridae
"Plioplatecarpus nichollsae" = Latoplatecarpus nichollsae
"Plioplatecarpus nichollsae" = Latoplatecarpus nichollsae Cuthbertson et al. 2007 mosasaur
TMP 83.24.01, skull