Mike's Main Channel: Geringian, Nebraska

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Proscalopidae
Proscalops tertius Reed 1961
Mammalia - Rodentia - Castoridae
Palaeocastor nebrascensis (Leidy 1856)
    = Palaeocastor sp. Leidy 1869
Alroy 2002
see Xu 1996
Mammalia - Rodentia - Heteromyidae
Proheteromys fedti Macdonald 1963
recombined as Proharrymys fedti
Heliscomys schlaikjeri Black 1961
    = Kirkomys schlaikjeri Black 1961
Alroy 2002
recombined as Proharrymys schlaikjeri
Proheteromys ironcloudi Macdonald 1963
Mammalia - Rodentia - Cricetidae
Geringia mcgregori (Macdonald 1970)
"B": described by Martin 1980a; "Paciculus cf. insolitus" of Alker 1969
Mammalia - Rodentia - Allomyidae
Downsimus chadwicki Macdonald 1970
Mammalia - Lagomorpha - Leporidae
Palaeolagus hypsodus Schlaikjer 1935
Palaeolagus philoi Dawson 1958
Mammalia - Primates - Ekgmowechashalidae
Ekgmowechashala philotau Macdonald 1963
Rust et al. 2023
Mammalia
Peratherium spindleri Macdonald 1963
    = Herpetotherium youngi McGrew 1937
Alroy 2002
see common names

Geography
Country:United States State/province:Nebraska County:Morrill
Coordinates: 41.7° North, 103.1° West (view map)
Paleocoordinates:42.5° North, 96.6° West
Basis of coordinate:based on political unit
Time
Period:Paleogene Epoch:Oligocene
10 m.y. bin:Cenozoic 4
*Period:Tertiary
Key time interval:Geringian
Age range of interval:30.80000 - 26.30000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Gering Member:Unit B
Local section:NPlat Local bed:6
Local order:bottom to top
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Metadata
Also known as:Mo-108, in part
Database number:17544
Authorizer:J. Alroy, K. Beard Enterer:J. Alroy, K. Beard
Research group:vertebrate
Created:2002-05-15 00:00:00 Last modified:2002-06-03 03:27:42
Access level:the public Released:2002-05-15 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]
86473 K. Rust, X. Ni, K. Tietjen and K. C. Beard. 2023. Phylogeny and paleobiogeography of the enigmatic North American primate Ekgmowechashala illuminated by new fossils from Nebraska (USA) and Guangxi Zhuang Autonomous Region (China). Journal of Human Evolution [K. Beard/K. Beard]