Sheep Mountain Table (Poleslide) (Oligocene of the United States)
Where: Pennington County, South Dakota (43.9° N, 102.4° W: paleocoordinates 44.9° N, 94.8° W)
• coordinate based on political unit
When: upper Poleslide Member (Brule Formation), Whitneyan (33.3 - 30.8 Ma)
Environment/lithology: terrestrial
Primary reference: R. W. Wilson. 1985. The Dentition of the Paleocene "Insectivore" Genus Acmeodon Matthew and Granger (?Palaeoryctidae, Mammalia). Journal of Paleontology 59(3):713-720 [J. Alroy/J. Alroy/J. Ju]more details
PaleoDB collection 17380: authorized by John Alroy, entered by John Alroy on 18.10.1995
Creative Commons license: CC BY (attribution)
Taxonomic list
• from the "channel phase" = Protoceras Channels
southern 1/3 of the table is in Shannon Co.
generically-identifiable NISP 16 (assuming that the four species described by Schultz and Falkenbach could be found among the 13 "Leptauchenia" and "oreodont" specimens of Wilson)
southern 1/3 of the table is in Shannon Co.
generically-identifiable NISP 16 (assuming that the four species described by Schultz and Falkenbach could be found among the 13 "Leptauchenia" and "oreodont" specimens of Wilson)
Show authors, comments, and common names
Mammalia | |
Archaeocyon pavidus3 Stock 1933 bone-crushing dog "Southeast corner of Sheep Mountain, uppermost part of Poleslide Member... 3 ft below base of Rockyford Ash... Shannon County"; "Canidae indet."
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Equidae indet. Gray 1821 horse | |
Leptauchenia major2, Leptauchenia decora2, "Paramerycoidodon major" = Merycoidodon major, "Miniochoerus cheyennensis n. sp." = Miniochoerus starkensis
Leptauchenia decora2 Leidy 1856 oreodont "SW. side" and "E. side" of Sheep Mountain, Brule Zone D; "L. sp." (three specimens not described by Schultz and Falkenbach)
"Paramerycoidodon major" = Merycoidodon major Leidy 1853 oreodont "NE. face of Sheep Mt."; also their "M. lambi" from "SE." and "SW. side" of Sheep Mountain; "M. lynchi" type "SW. side of Sheep Mt." and referred "head of Wind Creek, E. side of Sheep Mt."; "P. wanlessi" "head of Wind Creek, E. and S. of Sheep Mt."; "SW. side" and "SE. corner" of Sheep Mountain; "Otionohyus alexi" from "S. side of Sheep Mt."; "Genetochoerus chamberlaini" from "E. side of Sheep Mt." and "head of Wind Creek"; all Brule Zone D; and "Promesoreodon scanloni" Schultz and Falkenbach 1949 from Sheep Mountain ("Washington" Co.), Poleslide Mbr.
"Miniochoerus cheyennensis n. sp." = Miniochoerus starkensis Schultz and Falkenbach 1956 oreodont Brule Zone D Sheep Mt., Shannon Co.; Wilson reports an indeterminate oreodont
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Tayassuidae indet. Palmer 1897 peccary | |
Protoceras sp. Marsh 1891 protoceratid | |
Leptomeryx sp. Leidy 1853 ruminant | |
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Castoridae indet. Gray 1821 beaver | |
Palaeolagus sp. Leidy 1856 rabbit |