Harris Ranch Unit E Silt: Arikareean, South Dakota

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Rodentia - Aplodontidae
Ansomys cyanotephrus n. sp. Korth 2007
Korth 2007
Mammalia - Rodentia - Sciuridae
Hesperopetes jamesi n. sp. Emry and Korth 2007
Emry and Korth 2007
Hesperopetes blacki n. sp. Emry and Korth 2007
Emry and Korth 2007
Mammalia - Rodentia - Castoridae
Castoridae indet. Gray 1821
Mammalia - Erinaceidae
Ocajila macdonaldi Korth 2022
Korth 2022
Blue Ash Local Fauna (Unit E of Simpson, 1985)
Mammalia - Perissodactyla - Rhinocerotidae
Rhinocerotidae indet. Gray 1821
Diceratherium armatum Marsh 1875
Diceratherium annectens (Marsh 1873)
Prothero 2005
"Early Arikareean, Harris Ranch, ?Sharps Formation, Fall River County, South Dakota"
Woodoceras brachyops n. gen., n. sp. Prothero 2005
Prothero 2005
Mammalia - Perissodactyla - Equidae
Miohippus cf. brachystylus (Osborn 1904)
    = Miohippus cf. obliquidens Osborn 1904
Alroy 2002
Mammalia - Entelodontidae
Entelodontidae indet. Lydekker 1883
Mammalia - Anthracotheriidae
Elomeryx cf. garbanii Macdonald 1970
Mammalia - Protoceratidae
Protoceras skinneri n. sp. Patton and Taylor 1973
from "4 feet above a blue ash": see Patton and Taylor 1973
Mammalia - Agriochoeridae
Agriochoeridae indet. Leidy 1869
Mammalia - Merycoidodontidae
? Merycoidodon sp. Leidy 1848
large: probably OK
Hadroleptauchenia cf. shanafeltae Schultz and Falkenbach 1968
    = Leptauchenia major Leidy 1856
Alroy 2002
and "? Pseudocyclopidius major"
see common names

Geography
Country:United States State/province:South Dakota County:Fall River
Coordinates: 43.2° North, 103.2° West (view map)
Paleocoordinates:44.1° North, 97.3° West
Basis of coordinate:based on political unit
Time
*Period:Tertiary *Epoch:Oligocene
Key time interval:Arikareean
Age range of interval:30.80000 - 20.43000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Local section:HarRn Local bed:5
Local order:bottom to top
Stratigraphic resolution:member
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Taxonomic list comments:channel cuts into Brule Fm.; siltstone overlies basal microconglomerate
no evidence of reworking
Metadata
Also known as:Blue Ash Channel
Database number:17520
Authorizer:J. Alroy, N. Famoso, J. Marcot Enterer:J. Alroy, N. Famoso, J. Marcot
Research group:vertebrate
Created:1993-02-18 00:00:00 Last modified:2002-06-03 03:27:42
Access level:the public Released:1993-02-18 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

3163. 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]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
57333 R. J. Emry and W. W. Korth. 2007. A new genus of squirrel (Rodentia, Sciuridae) from the mid-Cenozoic of North America. Journal of Vertebrate Paleontology 27(3):693-698 [J. Marcot/J. Marcot]
57332 W. W. Korth. 2007. A new species of Ansomys (Rodentia, Aplodontidae) from the late Oligocene (latest Whitney-earliest Arikareean) of South Dakota. Journal of Vertebrate Paleontology 27(3):740-743 [J. Marcot/J. Marcot]
82958 W. W. Korth. 2022. The Hedgehog Ocajila Macdonald, 1963 (Mammalia, Lipotyphla, Erinaceidae) from the Oligocene (Orellan to Arikareean) of North America. Annals of Carnegie Museum 87(3):207-220 [N. Famoso/N. Famoso]
51726 D. R. Prothero. 2005. The Evolution of North American Rhinoceroses. 1-218 [J. Marcot/J. Marcot]