Plan B Locality (Paleocene of the United States)

Where: Sweetgrass County, Montana (46.0° N, 110.3° W: paleocoordinates 52.1° N, 89.5° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Melville Formation, Tiffanian (61.7 - 56.8 Ma)

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected in 2004

Primary reference: E. M. St. Clair, D. M. Boyer, J. I. Bloch and D. W. Krause. 2010. First records of a triisodontine mammal, Goniacodon levisanus, in the late Paleocene of the Northern Great Plains, North America. Journal of Vertebrate Paleontology 30(2):604-608 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 133180: authorized by Philip Mannion, entered by Philip Mannion on 05.09.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Acreodi - Triisodontidae
Goniacodon levisanus Cope 1883 placental
UM 51392 (left m2)
 Theriamorpha - Phenacodontidae
Ectocion sp. Cope 1882 condylarth
 Cimolesta - Pentacodontidae
Aphronorus orieli Gazin 1969 eutherian