Crabtree Bluff ( of the United States)

Also known as UWBM C0043

Where: Meagher County, Montana (46.5° N, 111.0° W: paleocoordinates 47.6° N, 105.1° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Deep River Formation, Arikareean (29.5 - 18.5 Ma)

Environment/lithology: terrestrial

Primary reference: A. D. Barnosky. 1982. A New Species of Proscalops (Mammalia, Insectivora) from the Arikareean Deep River Formation, Meagher County, Montana. Journal of Paleontology 56(5) [J. Alroy/J. Alroy/J. Ju]more details

PaleoDB collection 17489: authorized by John Alroy, entered by John Alroy on 26.07.1994

Creative Commons license: CC BY (attribution)

Taxonomic list

• sec 9 T10N R 5E
said to be "below" Spring Creek 1 but this is based on "the primitive nature of the aplodontid rodents"
Mammalia
 Theriamorpha - Proscalopidae
Proscalops sp. Matthew 1901 placental
 Rodentia - Aplodontidae
Niglarodon koerneri Black 1961 mountain beaver