Ruby River Basin No.5 (Miocene of the United States)

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

• coordinate based on political unit

When: "Madison Valley Equivalent" Formation, Miocene (23.0 - 5.3 Ma)

Environment/lithology: terrestrial

Primary reference: J. A. Dorr, Jr. and W. H. Wheeler. 1964. Cenozoic Paleontology, Stratigraphy, and Reconnaissance Geology of the Upper Ruby River Basin, Southwestern Montana. Contributions from the Museum of Paleontology, University of Michigan 13(12):297-339 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 19038: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Carnivora - Ursidae
Plithocyon ursinus1 Cope 1875 bear
 Perissodactyla - Rhinocerotidae
Teleoceras sp.1 Hatcher 1894 rhinoceros
 Perissodactyla - Chalicotheriidae
Tylocephalonyx sp.2 Coombs 1979 chalicothere
 Perissodactyla - Equidae
Hipparionini indet.1, "Protohippus sejunctus" = Merychippus sejunctus1
Hipparionini indet.1 Quinn 1955 hipparionine horse
"Protohippus sejunctus" = Merychippus sejunctus1 Cope 1874 horse