PBDB Collection

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 - 39.7 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

Show authors, comments, and common names

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