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 - Didelphimorphia - Didelphidae
Peratherium sp. Aymard 1850
    = Didelphidae indet. Gray 1821
Clark and Kietzke 1967
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
synonym of Colodon occidentalis
Mammalia - Perissodactyla - Equidae
Mesohippus bairdi (Leidy 1850)
"bairdii"
Mammalia - Entelodontidae
Archaeotherium mortoni Leidy 1850
Mammalia - Agriochoeridae
Agriochoerus antiquus Leidy 1850
Mammalia - Hypertragulidae
Hypertragulus calcaratus (Cope 1873)
Mammalia - Hypisodontidae
Hypisodus minimus (Cope 1873)
Mammalia - Leptomerycidae
Leptomeryx evansi Leidy 1853
Mammalia - Leptochoeridae
Stibarus obtusilobus Cope 1873
Mammalia - Tayassuidae
Perchoerus nanus (Marsh 1894)
Mammalia - Merycoidodontidae
Miniochoerus gracilis (Leidy 1851)
Merycoidodon culbertsoni (Leidy 1848)
original and current combination Merycoidodon culbertsonii
Mammalia - Camelidae
Poebrotherium wilsoni Leidy 1847
Mammalia - Carnivora - Nimravidae
Dinictis sp. (Leidy 1854)
Clark and Kietzke 1967
Mammalia - Carnivora - Palaeogalidae
Palaeogale sp. von Meyer 1846
Clark and Kietzke 1967
listed also as "Bunaelurus"
Mammalia - Carnivora - Canidae
Hesperocyon sp. Scott 1890
Clark and Kietzke 1967
Mammalia - Carnivora - Amphicyonidae
Daphoenus sp. Leidy 1853
Clark and Kietzke 1967
Mammalia - Carnivora - Mustelidae
Mustelavus sp. Clark 1936
Clark and Kietzke 1967
Mammalia - Geolabididae
Centetodon wolffi (Macdonald 1965)
Lillegraven et al. 1981
from Open Plain Facies in Pennington Co.
Mammalia - Rodentia - Cricetidae
Eumys elegans Leidy 1856
Mammalia - Rodentia - Ischyromyidae
Ischyromys typus Leidy 1856
Mammalia - Rodentia - Eutypomyidae
Eutypomys thomsoni Matthew 1905
Mammalia - Rodentia - Aplodontidae
Prosciurus relictus (Cope 1873)
recombined as Altasciurus relictus
Mammalia - Lagomorpha - Leporidae
Palaeolagus haydeni Leidy 1856
Megalagus turgidus (Cope 1873)
Mammalia - Leptictidae
Ictops sp. Leidy 1868
    = Leptictidae indet. Gill 1872
Clark and Kietzke 1967
see common names

Geography
Country:United States State/province:South Dakota County:Pennington
Coordinates: 43.9° North, 102.4° West (view map)
Paleocoordinates:45.0° North, 94.2° West
Basis of coordinate:based on political unit
Time
Period:Paleogene Epoch:Oligocene
Stage:Rupelian 10 m.y. bin:Cenozoic 4
*Period:Tertiary
Key time interval:Orellan
Age range of interval:33.90000 - 31.80000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Brule Member:Scenic
Local section:BgBad Local bed:4
Local order:bottom to top
Stratigraphy comments: Lower Nodular Zone
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Collection size:1127 specimens
Taxonomic list comments:although Damuth's collection of 7425 specimens is from three different areas several miles apart, data of Clark and Kietzke 1967 make it possible to separate out this list for a single locality in the north-central Sage Creek Basin; this includes 1127 specimens
mostly from "3 to 10 ft. below the top" of the LNZ: Clark and Kietzke 1967
about 200 yards west of the eastern locality
following taxa can't be assigned to a locality based on graphs of Clark and Kietzke 1967: Adjidaumo minutus Paradjidaumo trilophus Metamynodon planifrons Leptochoerus sp. - possibly "Bathygenys sp." of Clark and Kietzke 1967 "Protoceras" sp. ? Eotylopus sp.
Metadata
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:2002-06-03 03:27:42
Access level:the public Released:1995-10-18 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
1328. J. Damuth. 1982. Analysis of the Preservation of Community Structure in Assemblages of Fossil Mammals. Paleobiology 8(4):434-446 [J. Alroy/J. Alroy/J. Ju]

Secondary references:

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]