PBDB Collection

Sage Creek Basin (West): Orellan, South Dakota

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

Reptilia

	Peltosaurus sp. Cope 1873	Clark and Kietzke 1967
Reptilia - Testudines - Testudinidae

	Stylemys sp. Leidy 1851	Clark and Kietzke 1967
Mammalia - Leptictidae

	Ictops sp. Leidy 1868
	= Leptictidae indet. Gill 1872	Clark and Kietzke 1967
Mammalia - Geolabididae

	Centetodon wolffi (Macdonald 1965)	Lillegraven et al. 1981
	from Open Plain Facies in Pennington Co.
Mammalia - Perissodactyla - Hyracodontidae

	Hyracodon nebraskensis (Leidy 1850)
Mammalia - Perissodactyla - Rhinocerotidae

	Subhyracodon sp. Wood 1927
	includes "Caenopus sp." although Damuth indicates there are two species
Mammalia - Perissodactyla - Tapiridae

	Colodon dakotensis Osborn and Wortman 1895
Mammalia - Perissodactyla - Equidae

	Mesohippus bairdi (Leidy 1850)
	"bairdii"
Mammalia - Leptochoeridae

	Stibarus obtusilobus Cope 1873
Mammalia - Tayassuidae

	Perchoerus nanus (Marsh 1894)
Mammalia - Merycoidodontidae

	Miniochoerus gracilis (Leidy 1851)

	Merycoidodon culbertsoni (Leidy 1848)
Mammalia - Camelidae

	Poebrotherium wilsoni Leidy 1847
Mammalia - Hypertragulidae

	Hypertragulus calcaratus (Cope 1873)
Mammalia - Hypisodontidae

	Hypisodus minimus (Cope 1873)
Mammalia - Leptomerycidae

	Leptomeryx evansi Leidy 1853
Mammalia - Agriochoeridae

	Agriochoerus antiquus Leidy 1850
Mammalia - Entelodontidae

	Archaeotherium mortoni Leidy 1850
Mammalia - Carnivora - Palaeogalidae

	Palaeogale sp. von Meyer 1846	Clark and Kietzke 1967
	listed also as "Bunaelurus"
Mammalia - Carnivora - Nimravidae

	Dinictis sp. (Leidy 1854)	Clark and Kietzke 1967
Mammalia - Carnivora - Mustelidae

	Mustelavus sp. Clark 1936	Clark and Kietzke 1967
Mammalia - Carnivora - Amphicyonidae

	Daphoenus sp. Leidy 1853	Clark and Kietzke 1967
Mammalia - Carnivora - Canidae

	Hesperocyon sp. Scott 1890	Clark and Kietzke 1967
Mammalia - Lagomorpha - Leporidae

	Palaeolagus haydeni Leidy 1856

	Megalagus turgidus (Cope 1873)
Mammalia - Rodentia - Aplodontidae

	Prosciurus relictus (Cope 1873)
Mammalia - Rodentia - Cricetidae

	Eumys elegans Leidy 1856
Mammalia - Rodentia - Eutypomyidae

	Eutypomys thomsoni Matthew 1905
Mammalia - Rodentia - Ischyromyidae

	Ischyromys typus Leidy 1856
Mammalia - Didelphimorphia - Didelphidae

	Peratherium sp. Aymard 1850
	= Didelphidae indet. Gray 1821	Clark and Kietzke 1967
see common names

Country:	United States	State/province:	South Dakota	County:	Pennington
Coordinates:	43.9° North, 102.4° West (view map)
Paleocoordinates:	49.3° North, 85.9° West (Wright 2013)
Basis of coordinate:	based on political unit

Period:	Paleogene	Epoch:	Oligocene
Stage:	Rupelian	10 m.y. bin:	Cenozoic 4
*Period:	Tertiary
Key time interval:	Orellan
Age range of interval:	33.9 - 31.8 m.y. ago
* legacy (obsolete) database fields

Formation:	Brule	Member:	Scenic
Local section:	BgBad	Local bed:	4
Local order:	bottom to top
Stratigraphy comments: Lower Nodular Zone

Also known as:	Collections I, II, and V; Floodplain Assemblage; Open Plain Facies
Database number:	17174
Authorizer:	J. Alroy	Enterer:	J. Alroy
Research group:	vertebrate
Created:	1995-10-18 00:00:00	Last modified:	2025-02-22 15:12:02
Access level:	the public	Released:	1995-10-18 00:00:00
Creative Commons license:	CC0

6294		J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
6205		J. Clark and K. K. Kietzke. 1967. Paleoecology of the Lower Nodular Zone, Brule Formation, in the Big Badlands of South Dakota. Fieldiana 5(7):111-137 [J. Alroy/J. Alroy/J. Alroy]
2241		J. A. Lillegraven, M. C. McKenna, and L. Kristalka. 1981. Evolutionary relationships of middle Eocene and younger species of Centetodon (Mammalia, Insectivora, Geolabididae) with a description of the dentition of Ankylodon (Adapisoricidae). University of Wyoming Publication 45:1-115 [J. Alroy/J. Alroy/M. Uhen]