Niobrara River (Sheridan County) (Miocene of the United States)

Where: Sheridan County, Nebraska (42.7° N, 102.5° W: paleocoordinates 43.2° N, 99.5° W)

• coordinate based on political unit

When: Ogallala Group, Miocene (23.0 - 5.3 Ma)

Environment/lithology: terrestrial

Primary reference: X. Wang, R. H. Tedford, and B. E. Taylor. 1999. Phylogenetic systematics of the Borophaginae (Carnivora: Canidae). Bulletin of the American Museum of Natural History 243:1-392 [J. Alroy/J. Alroy/J. Alroy]more details

PaleoDB collection 18282: authorized by John Alroy, entered by John Alroy on 15.05.2002, edited by Jonathan Marcot and Evangelos Vlachos

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Testudines -
Toxochelys latiremis n. gen. n. sp.1
Toxochelys latiremis n. gen. n. sp.1 Cope 1873 turtle
Mammalia
 Perissodactyla - Equidae
"Protohippus simus" = Protohippus supremus2
"Protohippus simus" = Protohippus supremus2 Leidy 1869 horse
AMNH 10871, "from the Niobrara River locality"
 Carnivora - Canidae
Aelurodon ferox Leidy 1858 bone-crushing dog
"NE1/4 of Se of sect. 20, T29N, R45W"; this is a few miles to the east of Paleo Quarry