No Name: Arikareean, Nebraska

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia
Peratherium spindleri Macdonald 1963
synonym of Herpetotherium youngi
Mammalia - Perissodactyla - Rhinocerotidae
? Subhyracodon sp. Wood 1927
Mammalia - Perissodactyla - Equidae
Miohippus cf. intermedius (Osborn and Wortman 1895)
Mammalia - Merycoidodontidae
Sespia marianae Schultz and Falkenbach 1968
synonym of Sespia nitida
UNSM Mo-105, lower Gering
Pseudocyclopidius major (Leidy 1856)
original and current combination Leptauchenia major
from UNSM Mo-105, lower Gering
Hadroleptauchenia shanafeltae Schultz and Falkenbach 1968
synonym of Leptauchenia major
from UNSM Mo-105, lower Gering
Mammalia - Camelidae
Miotylopus brachygnathus
repeats misspelling of McKenna and Love 1972 (6 measurements)
Mammalia - Carnivora - Canidae
Archaeocyon leptodus (Schlaikjer 1935)
Wang et al. 1999
"One mi east of Birdcage Gap (UNSM loc. Mo-105)"; 10 ft above base of member
Mammalia - Rodentia - Florentiamyidae
Sanctimus stuartae Macdonald 1970
Mammalia - Rodentia - Cricetidae
Geringia mcgregori (Macdonald 1970)
"A"
Mammalia - Rodentia - Sciuridae
Protospermophilus sp. Gazin 1930
said to be new
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
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
Primary lithology: not reported
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Taxonomic list comments:a.k.a. Horn Member of Brule Formation
Metadata
Also known as:Mo-105; One mile east of Birdcage Gap
Database number:17568
Authorizer:J. Alroy, J. Marcot Enterer:J. Alroy, J. Marcot
Modifier:J. Marcot Research group:vertebrate
Created:1993-02-18 00:00:00 Last modified:2023-10-12 22:48:34
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]
3069 C. B. Schultz and C. H. Falkenbach. 1968. The Phylogeny of the Oreodonts. Part 1: Merycoidodontinae, Eporeodontinae, and Leptaucheniinae, Three Subfamilies Of Oreodonts, With an Appendix to the Revision Of The Merycoidodontidae, and Part 2. Summary and Conclusions Concerning the Merycoidodontidae. Bulletin of the American Museum of Natural History 139:1-498 [J. Alroy/J. Alroy/J. Marcot]
3558 X. Wang, R. H. Tedford, and B. E. Taylor. 1999. Phylogenetic systematics of the Borophaginae (Carnivora: Canidae). Bulletin of the American Museum of Natural History 243:1-392 [J. Alroy/J. Alroy/J. Alroy]