Frank Ranch (Miocene of the United States)

Also known as MV 6015

Where: Madison County, Montana (45.2° N, 112.0° W: paleocoordinates 45.9° N, 109.0° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Sixmile Creek Formation, Miocene (23.0 - 5.3 Ma)

Environment/lithology: terrestrial

Primary reference: W. D. Kuenzi and R. W. Fields. 1971. Tertiary Stratigraphy, Structure, and Geologic History, Jefferson Basin, Montana. Geological Society America Bulletin 82(12):3373-3394 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 18896: authorized by John Alroy, entered by John Alroy on 26.07.1994

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Perissodactyla - Equidae
Acritohippus isonesus Cope 1889 horse
 Artiodactyla - Agriochoeridae
Agriochoeridae indet. Leidy 1869 agriochoerid
could be Merychyus elegans of Kelly and Lander 1988 from "Sixmile Creek Formation equivalent... Sage Creek area, Red Rock River valley" and "Sixmile Creek Member, Renova Formation... Jefferson River Valley"