Beaver Divide Locality 11 (Eocene of the United States)

Where: Fremont County, Wyoming (43.2° N, 108.2° W: paleocoordinates 44.8° N, 99.5° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Big Sand Draw Sandstone Lentil Member (White River Formation), Early/Lower Chadronian (37.2 - 33.9 Ma)

• said to be early Chadronian

Environment/lithology: terrestrial

Primary reference: F. B. Van Houten. 1964. Tertiary geology of the Beaver Rim area, Fremont and Natrona Counties, Wyoming. United States Geological Survey Bulletin 1164:1-99 [J. Alroy/J. Alroy/J. Ju]more details

PaleoDB collection 16906: authorized by John Alroy, entered by John Alroy on 30.04.1994

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Perissodactyla - Brontotheriidae
Brontotheriidae indet. Marsh 1873 brontothere
 Perissodactyla - Rhinocerotidae
Caenopus yoderensis Schlaikjer 1935 rhinoceros
 Perissodactyla - Amynodontidae
Metamynodon cf. planifrons Scott and Osborn 1887 odd-toed ungulate
 Perissodactyla - Hyracodontidae
Hyracodon cf. priscidens Lambe 1905 odd-toed ungulate
"H. cf. priscus Lambe 1905": lapsus calami; probably OK in light of Prothero 1996e
 Perissodactyla - Equidae
Equidae indet. Gray 1821 horse
"cf. Epihippus intermedius... or small species of Mesohippus... closely resembles ?Epihippus from the Yoder Formation"; however, only M. cf. bairdi is present at Yoder
 Artiodactyla - Entelodontidae
Brachyhyops wyomingensis n. sp. Colbert 1937 even-toed ungulate
 Artiodactyla - Leptomerycidae
Leptomerycidae indet. Zittel 1893 ruminant