Nipple Butte Quarry: Arikareean, Nebraska

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia
Peratherium spindleri Macdonald 1963
    = Herpetotherium youngi McGrew 1937
Alroy 2002
Nanodelphys sp. McGrew 1937
said to be new
Mammalia - Proscalopidae
Proscalops tertius Reed 1961
Mammalia - Lagomorpha - Leporidae
Palaeolagus hypsodus Schlaikjer 1935
Palaeolagus philoi Dawson 1958
Mammalia - Rodentia - Heteromyidae
Proheteromys fedti Macdonald 1963
recombined as Proharrymys fedti
Mammalia - Rodentia - Castoridae
Palaeocastor nebrascensis (Leidy 1856)
    = Palaeocastor sp. Leidy 1869
Alroy 2002
see Xu 1996
Mammalia - Rodentia - Zetamyidae
Zetamys nebraskensis Martin 1974
Mammalia - Rodentia - Cricetidae
Leidymys blacki (Macdonald 1963)
Geringia mcgregori (Macdonald 1970)
"A": probably includes specimen of "Paciculus nebraskensis" from "Mo-104" of L. Martin 1980a, said by Korth 1992a to be "Geringia, or a new cricetid"; according to Swisher, "Most of the specimens referred to Paciculus by Martin (1980) are referrable to Geringia."
Eumys brachyodus Wood 1937
Mammalia - Rodentia - Florentiamyidae
Sanctimus stuartae Macdonald 1970
see common names

Geography
Country:United States State/province:Nebraska County:Morrill
Coordinates: 41.7° North, 103.1° West (view map)
Paleocoordinates:42.6° North, 97.3° West
Basis of coordinate:based on political unit
Geographic resolution:small collection
Time
10 m.y. bin:Cenozoic 4-5
*Period:Tertiary *Epoch:Oligocene
Key time interval:Arikareean
Age range of interval:29.50000 - 18.50000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Brule Member:Brown Siltstone
Local section:NPlat Local bed:5
Local order:bottom to top
Stratigraphy comments: Unit A
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Metadata
Also known as:Mo-104, in part
Database number:17567
Authorizer:J. Alroy Enterer:J. Alroy
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:

3345. C. C. Swisher. 1982. Stratigraphy and biostratigraphy of the eastern portion of the Wildcat Ridge, western Nebraska. 1-172 [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]