Corral Draw (Lower Nodular Zone) (Oligocene of the United States)

Where: Shannon County, South Dakota (43.3° N, 102.5° W: paleocoordinates 44.4° N, 94.3° W)

• coordinate based on political unit

When: Scenic Member (Brule Formation), Orellan (33.9 - 33.3 Ma)

• member-level stratigraphic resolution

Environment/lithology: terrestrial

Primary reference: W. W. Korth. 2000. A new species of Eutypomys Matthew (Rodentia, Eutypomyidae) from the Orellan (Oligocene) and reevaluation of “Eutypomys” magnus Wood. Paludicola 2(4):273-278 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 17092: authorized by John Alroy, entered by John Alroy on 26.03.1995, edited by Evangelos Vlachos

Creative Commons license: CC BY (attribution)

Taxonomic list

• stratigraphic position uncertain: Parictis sp. Hunt 1998a: "Scenic Member... Big Corral Draw, Shannon County"
"Poebrotherium eximium" Sinclair 1924: "Corral Draw... presumably from the lower concretionary zone"; however, the Chadron is well-exposed and fossiliferous in Corral Draw
Reptilia
 Testudines - Pantestudinidae
"Testudo thomsoni n. sp." = Oligopherus laticuneus2
"Testudo thomsoni n. sp." = Oligopherus laticuneus2 Cope 1873 turtle
AMNH 3940 (holotype), a skull, shell fragments, and associated appendicular elements (Hay 1908, pl. 66.1–5)
 Squamata -
Peltosaurus granulosus7 Cope 1873 squamates
"from the lower concretionary zone in Corral Draw" PU 12654, portions of maxilla and ramus with numerous dermal scutes - Gilmore 1928 (14538)
Mammalia
 Rodentia - Castoridae
Oligotheriomys magnus n. sp. Wood 1937 beaver
"East Fork of Big Corral Draw... lower concretionary level"
 Perissodactyla - Hyracodontidae
Hyracodon nebraskensis3 Leidy 1850 odd-toed ungulate
LNZ, Big Corral Draw; based on measurements, includes specimen of "H. apertus" of Sinclair 1922c from LNZ in Corral Draw
 Carnivora - Amphicyonidae
Daphoenus vetus7 Leidy 1853 bear-dog
Corral Draw; at least one of 7 specimens
 Carnivora - Canidae
Hesperocyon gregarius1 Cope 1873 canid
 Carnivora - Nimravidae
Hoplophoneus primaevus1 Leidy and Owen 1851 false sabre-tooth
 Ungulata - Merycoidodontidae
Miniochoerus affinis1 Leidy 1869 oreodont
Miniochoerus gracilis4 Leidy 1851 oreodont
West Big Corral Draw, Brule Zone A
"Merycoidodon culbertsoni" = Merycoidodon (Merycoidodon) culbertsoni5 Leidy 1848 oreodont
Big Corral Draw, West Big Corral Draw, E. Fork Big Corral Draw, and "between Big and Little Corral Draws"; also their "M. culbertsoni osborni" from Big Corral Draw and "between Big and Little Corral Draws"; "Paramerycoidodon georgei" from Big Corral Draw; "Otionohyus wardi" from "1 1/2 mi. S."; "N."; and "1/2 mi. N." of Cottonwood Pass and Big Corral Draw; "Genetochoerus periculorum" from "between Big and Little Corral Draws"; all Brule Zone A
 Ungulata - Entelodontidae
Archaeotherium sp.6 Leidy 1850 even-toed ungulate
close to "A. ingens"; LNZ in Corral Draw
Archaeotherium mortoni6 Leidy 1850 even-toed ungulate
LNZ in Corral Draw
 Hyaenodonta - Hyaenodontidae
Hyaenodon mustelinus n. sp.7 Scott 1894 eutherian
not from Protoceras beds contra Scott; Corral Draw