Chalky Buttes Slump Block (Oligocene of the United States)
Where: Slope County, North Dakota (46.4° N, 103.3° W: paleocoordinates 47.4° N, 95.5° W)
• coordinate based on political unit
When: Brule Formation, Whitneyan (33.3 - 30.8 Ma)
Environment/lithology: terrestrial
Primary reference: N. M. Denson and J. R. Gill. 1965. Uranium-bearing lignite and carbonaceous shale in the southwestern part of the Williston Basin - a regional study, with a section on heavy minerals in Cretaceous and Tertiary rocks associated with uranium occurrences. United States Geological Survey Professional Paper 463:1-75 [J. Alroy/J. Alroy/J. Ju]more details
PaleoDB collection 17320: authorized by John Alroy, entered by John Alroy on 17.06.2000
Creative Commons license: CC BY (attribution)
Taxonomic list
• entire collection is from NE 1/4 NW 1/4 sec 31 T134N R100W and appears to be younger than Orellan Chalky Buttes material of other authors
IDs by Hough
IDs by Hough
Show authors, comments, and common names
Mammalia | |
Miohippus sp. Marsh 1874 anchitheriine horse | |
Hyracodon sp. Leidy 1856 odd-toed ungulate | |
Merycoidodontidae indet. Cook 1912 oreodont | |
? Protoceras sp. Marsh 1891 protoceratid | |
Palaeolagus sp. Leidy 1856 rabbit | |
Eumys sp. Leidy 1856 mouse | |
Aplodontidae indet. Brandt 1855 mountain beaver | |
? Cedromus sp. Wilson 1949 squirrel | |
? Paradjidaumo sp. Burke 1934 rodent |