AMNH Rosebud 21 ( of the United States)

Where: Shannon County, South Dakota (43.3° N, 102.5° W: paleocoordinates 44.1° N, 97.4° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Harrison Formation, Harrisonian (24.8 - 20.4 Ma)

Environment/lithology: terrestrial

Reposited in the AMNH

Primary reference: J. R. Macdonald. 1970. Review of the Miocene Wounded Knee faunas of southwestern South Dakota. Bulletin of the Los Angeles County Museum of Natural History, Science 8:165-82 [J. Alroy/J. Alroy/C. Bell]more details

PaleoDB collection 17458: authorized by John Alroy, entered by John Alroy on 19.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• NISP 4
Mammalia
 Rodentia - Castoridae
Fossorcastor brachyceps Matthew 1907 beaver
 Perissodactyla - Rhinocerotidae
"Diceratherium gregorii n. sp." = Diceratherium armatum
"Diceratherium gregorii n. sp." = Diceratherium armatum Marsh 1875 rhinoceros
of Peterson 1920
 Ungulata - Merycoidodontidae
Mesoreodon minor Douglass 1903 oreodont
 Ungulata - Anthracotheriidae
Arretotherium leptodus n. sp. Matthew 1909 anthracothere
mistakenly said to be from AMNH Rosebud 20 by Macdonald 1963