Douglass Draw (Eocene of the United States)

Where: Beaverhead County, Montana (45.0° N, 112.8° W: paleocoordinates 48.0° N, 101.2° W)

• coordinate based on political unit

When: Dell Beds Formation, Late/Upper Uintan (46.2 - 40.4 Ma)

• said to be late Uintan

Environment/lithology: terrestrial

Primary reference: A. R. Tabrum, D. R. Prothero, and D. Garcia. 1996. Magnetostratigraphy and biostratigraphy of the Eocene-Oligocene transition, southwestern Montana. In D. R. Prothero and R. J. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America 278-311 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 16551: authorized by John Alroy, entered by John Alroy on 12.04.1997

Creative Commons license: CC BY (attribution)

Taxonomic list

• "Sage Creek" fauna of Hough 1955, in part
probably includes "Sage Creek" material of Douglass 1903
Mammalia
 Rodentia - Cylindrodontidae
Cylindrodontidae indet. Miller and Gidley 1918 rodent
 Perissodactyla - Brontotheriidae
Brontotheriidae indet. Marsh 1873 brontothere
 Perissodactyla - Amynodontidae
Amynodon cf. advenus Marsh 1875 odd-toed ungulate
see also Bjork 1967
 Perissodactyla - Hyracodontidae
Hyracodontidae indet. Cope 1879 odd-toed ungulate
Triplopus cf. rhinocerinus Wood 1927 odd-toed ungulate
 Perissodactyla - Tapiridae
Heteraletes leotanus Peterson 1932 tapir
Colodon cf. woodi Gazin 1956 tapir
Colodon kayi Hough 1955 tapir
see also Hough 1955
 Ungulata - Homacodontidae
Homacodontidae indet. Marsh 1849 even-toed ungulate
 Ungulata - Agriochoeridae
Agriochoeridae indet. Leidy 1869 agriochoerid
"Protoreodon or Diplobunops sp."
 Ungulata - Protoceratidae
Leptoreodon marshi Wortman 1898 protoceratid