Sand Canyon Quarry: Hemingfordian, Nebraska

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Erinaceidae
Brachyerix macrotis Matthew 1933
see Rich 1981
Mammalia - Perissodactyla - Equidae
Archaeohippus sp. Gidley 1906
Acritohippus tertius (Osborn 1918)
Mihlbachler et al. 2011
original and current combination Merychippus isonesus tertius
Supplemental Table S1
Mammalia - Palaeomerycidae
Bouromeryx sp. Skinner et al. 1977
Mammalia - Antilocapridae
Merycodus wilsoni
    = Paracosoryx cf. wilsoni Frick 1937
Alroy 2002
original and current combination Cosoryx (Paracosoryx) wilsoni
Mammalia - Merycoidodontidae
Merychyus sp. Leidy 1858
    = Merychyus elegans Leidy 1858
Schultz and Falkenbach 1947
Galusha implies that M. elegans is restricted to the Runningwater Fm., but Schultz and Falkenbach explicitly place this record at Sand Canyon Quarry
Mammalia - Carnivora - Mustelidae
Miomustela sp. Hall 1930
Mammalia - Carnivora - Canidae
Phlaocyon leucosteus Matthew 1899
Wang et al. 1999
"possibly reworked from the Runningwater Formation"
see common names

Geography
Country:United States State/province:Nebraska County:Dawes
Coordinates: 42.8° North, 103.1° West (view map)
Paleocoordinates:43.5° North, 99.2° West
Basis of coordinate:based on political unit
Geographic resolution:small collection
Time
Period:Neogene Epoch:Miocene
Stage:Burdigalian 10 m.y. bin:Cenozoic 5
*Period:Tertiary
Key time interval:Hemingfordian
Age range of interval:20.43000 - 15.97000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Box Butte Member:Red Valley
Local section:PineR Local bed:17
Local order:bottom to top
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Collection size:40 specimens
Taxonomic list comments:"40 specimens"
Runningwater Fm., Red Valley Mbr., and Dawes Clay Mbr. all are superposed in the canyon: fig. 8 "Merychyus verrucomalus" Stevens 1970 from two coordinates on Sand Canyon; I presume these are from the Runningwater
"Metatomarctus canavus" Wang et al. 1999: "Sand Canyon Region"

"Brachycrus cf. wilsoni" of Schultz and Falkenbach 1940 is from "the upper part of the section in this canyon" (Dawes Clay?); Schultz and Falkenbach 1940 also list Merycochoerus sp. - and Schultz and Falkenbach 1941 "Ticholeptus hypsodus" - but these are of unstated provenance
Metadata
Database number:17991
Authorizer:J. Alroy, J. Marcot Enterer:J. Alroy, J. Marcot
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:

1583. T. Galusha. 1975. Stratigraphy of the Box Butte Formation, Nebraska. Bulletin of the American Museum of Natural History 156(1) [J. Alroy/J. Alroy/J. Ju]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
61275 M. C. Mihlbachler, F. Rivals, N. Solounias and G. M. Semprebon. 2011. Dietary Change and Evolution of Horses in North America. Science 331:1178-1181 [J. Marcot/J. Marcot]
3064 C. B. Schultz and C. H. Falkenbach. 1947. Merychyinae, a subfamily of oreodonts. Bulletin of the American Museum of Natural History 88(4):157-286 [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]