Harris Ranch Unit C (Oligocene of the United States)

Where: Fall River County, South Dakota (43.2° N, 103.2° W: paleocoordinates 44.2° N, 95.7° W)

• coordinate based on political unit

When: Whitney Member (Brule Formation), Whitneyan (33.3 - 30.8 Ma)

• member-level stratigraphic resolution

Environment/lithology: terrestrial

Primary reference: W. F. Simpson. 1985. Geology and paleontology of the Oligocene Harris Ranch Badlands, southwestern South Dakota. Dakoterra 2(2):303-333 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 17337: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• possibly relevant: Merycoidodon major - "Genetochoerus chamberlaini" Schultz and Falkenbach 1968: "5 mi. NW. of Slim Butte" in "Brule Zone D" (could be Harris Ranch Units C or D) Leptauchenia major - "Hadroleptauchenia primitiva" Schultz and Falkenbach 1968: "7 miles northwest of Slim Butte" in "Brule Zone D"
Show authors, comments, and common names
Mammalia
 Cimolesta - Apatemyidae
Sinclairella cf. dakotensis
Sinclairella cf. dakotensis Jepsen 1934 eutherian
 Creodonta - Hyaenodontidae
Hyaenodon cf. horridus
Hyaenodon cf. horridus Leidy 1853 creodont
"cf. cruentus" - not clear why Mellett 1977 is contradicted by this i.d.
 Carnivora - Amphicyonidae
? Daphoenus sp.
? Daphoenus sp. Leidy 1853 bear-dog
 Carnivora - Canidae
Oxetocyon sp., Hesperocyon sp.
Oxetocyon sp. Green 1954 bone-crushing dog
Hesperocyon sp. Scott 1890 canid
 Carnivora - Nimravidae
? Nimravidae indet.
? Nimravidae indet. Cope 1880 false sabre-tooth
 Perissodactyla - Hyracodontidae
Hyracodon leidyanus2
Hyracodon leidyanus2 Troxell 1921 odd-toed ungulate
 Artiodactyla - Entelodontidae
Entelodontidae indet.
Entelodontidae indet. Lydekker 1883 even-toed ungulate
 Artiodactyla - Merycoidodontidae
? Merycoidodon sp., ? Merycoidodon cf. bullatus, Leptauchenia decora
? Merycoidodon sp. Leidy 1848 oreodont
small: said to be new
? Merycoidodon cf. bullatus Leidy 1869 oreodont
Leptauchenia decora Leidy 1856 oreodont
includes "L. cf. harveyi"; may include "Pithecistes tanneri" and L. decora of Schultz and Falkenbach 1968 from "7 miles northwest of Slim Butte" in "Brule Zone D"; L. decora from "5 mi. NW. of Slim Butte"; also their Brule D specimen from "Little Bad Lands, near Oelrichs"
 Artiodactyla - Hypisodontidae
Hypisodus sp.
Hypisodus sp. Cope 1873 ruminant
 Artiodactyla - Leptomerycidae
Leptomeryx cf. evansi1
Leptomeryx cf. evansi1 Leidy 1853 ruminant
 Theriamorpha - Proscalopidae
Proscalops tertius
Proscalops tertius Reed 1961 placental
 Theriamorpha - Soricidae
Domnina gradata
Domnina gradata Cope 1873 shrew
 Lagomorpha - Leporidae
Megalagus turgidus, ? Palaeolagus intermedius, Palaeolagus burkei
Megalagus turgidus Cope 1873 rabbit
? Palaeolagus intermedius Matthew 1899 rabbit
Palaeolagus burkei Schlaikjer 1935 rabbit
 Rodentia - Florentiamyidae
"Proheteromys nebraskensis" = Kirkomys nebraskensis
"Proheteromys nebraskensis" = Kirkomys nebraskensis Wood 1937 rodent
 Rodentia - Cricetidae
Scottimus sp., Scottimus exiguus, Eumys sp., Eumys brachyodus
Scottimus sp. Wood 1937 mouse
Scottimus exiguus Wood 1937 mouse
Eumys sp. Leidy 1856 mouse
Eumys brachyodus Wood 1937 mouse
 Theriamorpha - Herpetotheriidae
Herpetotherium sp.
Herpetotherium sp. Cope 1873 marsupial
"A"
1Alroy 2002; 2Prothero 1996