Mammalia - Theriiformes - Herpetotheriidae

PaleoDB taxon number: 253246

Alternative combination: Alphadon jasoni

Synonym: Nortedelphys intermedius Case et al. 2004 (taxon 160065)

Full reference: J. E. Storer. 1991. The mammals of the Gryde Local Fauna, Frenchman Formation (Maastrichtian: Lancian), Saskatchewan. Journal of Vertebrate Paleontology 11(3):350-369

Belongs to Nortedelphys according to T. E. Williamson et al. 2012

Sister taxa: Nortedelphys magnus, Nortedelphys minimus

Type specimens:

• Nortedelphys jasoni: Its type locality is Gryde locality, which is in a Lancian floodplain siltstone in the Frenchman Formation of Canada
• Nortedelphys intermedius: UCMP 134776, a tooth (LM3). Its type locality is Tedrow Quarry D (Reworked), which is in a Lancian terrestrial horizon in the Hell Creek Formation of Montana.

Ecology: ground dwelling omnivore

Average measurements (in mm): M1 2.20 x 2.43, M2 2.20 x 2.54, M3 2.17 x 2.67, m1 2.08 x 1.17, m2 2.12 x 1.36, m3 2.24 x 1.40

Estimated body mass: 72.1 g based on M1 length, M1 width, M2 length, M2 width, M3 length, M3 width, m1 length, m1 width, m2 length, m2 width, m3 length, and m3 width