Peterson Creek (Lower MV 7303) ( of the United States)

Where: Lemhi County, Idaho (45.0° N, 113.6° W: paleocoordinates 46.2° N, 107.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Peterson Creek Beds Formation, Arikareean (29.5 - 18.5 Ma)

Environment/lithology: terrestrial

Primary reference: R. Nichols. 1976. Early Miocene mammals from the Lemhi Valley of Idaho. Tebiwa 18(2):9-47 [J. Alroy/J. Alroy/M. Uhen]more details

PaleoDB collection 17583: authorized by John Alroy, entered by John Alroy on 26.03.1995

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Rodentia - Aplodontidae
"Meniscomys yeariani n. sp." = Niglarodon yeariani
"Meniscomys yeariani n. sp." = Niglarodon yeariani Nichols 1976 mountain beaver
from Big Wash, about 150' below the "middle" level