Hough Draw (Eocene of the United States)

Also known as Sage Creek Basin

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 16584: 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

•not to be confused with Chadronian Hough Draw localitie

•several species listed by Hough 1955 are not mentioned at all by Tabrum et al., but are probably synonyms of other species listed by them

 Rodentia - Sciuravidae
Sciuravidae indet. Miller and Gidley 1918 rodent
 Rodentia - Ischyromyidae
? Ischyromys sp. Leidy 1856 rodent
 Rodentia - Cylindrodontidae
Pseudocylindrodon sp. Burke 1935 rodent
said to be new
? Pareumys sp. Peterson 1919 rodent
said to be new
 Lagomorpha - Leporidae
Mytonolagus cf. petersoni Burke 1934 rabbit
 Perissodactyla - Brontotheriidae
Brontotheriidae indet. Marsh 1873 brontothere
 Perissodactyla -
Schizotheriodes parvus n. sp. Hough 1955 odd-toed ungulate
see also Hough 1955
 Perissodactyla - Hyracodontidae
cf. Hyracodon medius Peterson 1934 odd-toed ungulate
 Perissodactyla - Tapiridae
Heteraletes leotanus Peterson 1932 tapir
Colodon kayi n. sp. Hough 1955 tapir
see also Hough 1955
 Perissodactyla - Equidae
Epihippus cf. gracilis Marsh 1871 horse
"E. cf. uintensis":see also Hough 1955
 Ferae -
Tapocyon robustus Peterson 1919 placental
see also Wesley and Flynn 2003 (as "Sage Creek Basin")
 Ferae - Epoicotheriidae
Epoicotherium sp. Simpson 1927 placental
 Ungulata - Homacodontidae
Homacodontidae indet. Marsh 1849 even-toed ungulate
 Ungulata - Agriochoeridae
Protoreodon sp. Scott and Osborn 1887 agriochoerid
Protoreodon cf. pumilus Marsh 1875 agriochoerid
includes "Mesagriochoerus cf. primus" of Hough 1955
"Protoreodon pearcei" = Diplobunops matthewi Peterson 1919 agriochoerid
also listed by Gazin 1956
 Ungulata - Protoceratidae
 Theriiformes - Herpetotheriidae
Herpetotherium cf. knighti McGrew et al. 1959 marsupial