Ken's Saddle (Cretaceous of the United States)
Where: McCone County, Montana (47.8° N, 106.1° W: paleocoordinates 54.4° N, 79.0° W)
• coordinate based on political unit
When: Hell Creek Formation, Lancian (70.6 - 66.0 Ma)
Environment/lithology: terrestrial
Primary reference: R. E. Sloan and L. Van Valen. 1965. Cretaceous mammals from Montana. Science 148(3667):220-227 [J. Alroy/J. Alroy/J. Alroy]more details
PaleoDB collection 14576: authorized by John Alroy, entered by John Alroy on 15.05.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
• underlies Anthills East, Ken's Apex, and Not My Fault, all of which are unpublished; all four are apparently not in deep channel sandstones: Sloan et al. 1986, Archibald and Lofgren 1990
"100 feet below the Tullock Formation, on Bug Creek, in sect. 8, T 22 N, R 43 E"; because this is lower than BCA and because the base of the BCA records the lowest reversed site of Archibald et al. 1992, this is almost certainly close to the top of chron C30n, which is 65.578 Ma according to Cande and Kent 1995
seems not to include Paleocene specimens based on Sloan et al. 1986, Lofgren 1995
"100 feet below the Tullock Formation, on Bug Creek, in sect. 8, T 22 N, R 43 E"; because this is lower than BCA and because the base of the BCA records the lowest reversed site of Archibald et al. 1992, this is almost certainly close to the top of chron C30n, which is 65.578 Ma according to Cande and Kent 1995
seems not to include Paleocene specimens based on Sloan et al. 1986, Lofgren 1995
Show authors, comments, and common names
| Mammalia | |
|
Essonodon browni Simpson 1927 multituberculate
Cimolomys gracilis Marsh 1889 multituberculate | |
|
Mesodma thompsoni Clemens 1964 multituberculate
Mesodma formosa Marsh 1889 multituberculate | |
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Cimolodon nitidus Marsh 1889 multituberculate | |
|
Cimexomys minor Sloan and Van Valen 1965 multituberculate | |
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Gypsonictops hypoconus Simpson 1927 eutherian | |
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Didelphodon vorax Marsh 1889 metatherian | |
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"Pediomys hatcheri" = Protolambda hatcheri Osborn 1898 metatherian
Pediomys elegans Marsh 1889 metatherian | |