Southeast of Lusk ( of the United States)

Where: Niobrara County, Wyoming (43.0° N, 104.5° W: paleocoordinates 43.9° N, 99.4° W)

• coordinate based on political unit

When: Marsland Formation (Hemingford Group), Harrisonian (24.8 - 18.5 Ma)

• = Upper Harrison beds; formational assignment of Hunt and Skolnick 1996 is admittedly not strongly supported

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Primary reference: C. B. Schultz and C. H. Falkenbach. 1950. Phenacocoelinae, a new subfamily of oreodonts. Bulletin of the American Museum of Natural History 95(3) [J. Alroy/J. Alroy/J. Ju]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 17840: authorized by John Alroy, entered by John Alroy on 02.06.1997, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Perissodactyla - Rhinocerotidae
Menoceras arikarense2
Menoceras arikarense2 Barbour 1906 rhinoceros
"2 mile district"
 Artiodactyla - Merycoidodontidae
Phenacocoelus kayi n. sp.
Phenacocoelus kayi n. sp. Schultz and Falkenbach 1950 oreodont
"Harrison formation, 4 mi. E. and 2 mi. S. of Lusk, Niobrara County, Wyoming"
 Carnivora - Mustelidae
Megalictis ferox1
Megalictis ferox1 Matthew 1907 mustelid carnivore
"4 mi E - 2 mi S Lusk ... Upper Harrison"
1Hunt and Skolnick 1996; 2Prothero 2005