Machaerodus Quarry: Clarendonian, Nebraska

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Antilocaprini indet.
Frick 1937
postcrania listed under "Plioceros floblairi"
Mammalia - Perissodactyla - Rhinocerotidae
Teleoceras major Hatcher 1894
Prothero 2005
Aphelops megalodus (Cope 1873)
Prothero 2005
Mammalia - Perissodactyla - Equidae
Neohipparion trampasense (Edwards 1982)
Hulbert 1987
Cormohipparion matthewi Woodburne 2007
Woodburne 2007
Hippotherium occidentale (Leidy 1856)
Alroy 2002
recombined as Cormohipparion occidentale
JA pers. obs.
Pseudhipparion skinneri Webb and Hulbert 1986
Hulbert 1989
pers. commun.
Calippus cerasinus (Hulbert 1988)
Hulbert 1989
pers. commun.
Mammalia - Gelocidae
Pseudoceras skinneri Frick 1937
Frick 1937
Mammalia - Moschidae
Parablastomeryx gregorii Frick 1937
Frick 1937
Mammalia - Tayassuidae
informal Clarendonian peccary sp.
Wright 1993
new species; see also Wright 1998
    = Skinnerhyus shermerorum n. gen., n. sp. Prothero and Pollen 2013
Prothero and Pollen 2013
Mammalia - Carnivora - Canidae
Aelurodon taxoides Hatcher 1894
Paratomarctus euthos (McGrew 1935)
Epicyon saevus (Leidy 1858)
Mammalia - Rodentia - Castoridae
Prodipoides katensis (Korth 2002)
Korth 2007
"Machaeroides Quarry"
see common names

Geography
Country:United States State/province:Nebraska County:Cherry
Coordinates: 42.8° North, 100.8° West (view map)
Paleocoordinates:43.3° North, 98.2° West
Basis of coordinate:based on political unit
Geographic resolution:small collection
Time
Period:Neogene Epoch:Miocene
10 m.y. bin:Cenozoic 5-6
*Period:Tertiary
Key time interval:Clarendonian
Age range of interval:12.50000 - 9.40000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Ash Hollow Member:Merritt Dam
Local section:ValAH Local bed:6
Local order:bottom to top
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Collection excludes:some genera
Taxonomic list comments:underlies Machaerodus Ash, dated at 9.95 +/- 0.8 Ma FT on glass
185 F:AM specimens: Skinner and Johnson 1984
Metadata
Also known as:Machairodus Quarry; Xmas Channel
Database number:18245
Authorizer:J. Alroy, J. Marcot Enterer:J. Alroy, J. Marcot
Modifier:J. Alroy Research group:vertebrate
Created:1992-08-05 00:00:00 Last modified:2007-08-25 19:20:36
Access level:the public Released:1993-02-18 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

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]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
6222 C. Frick. 1937. Horned ruminants of North America. Bulletin of the American Museum of Natural History 69:1-669 [J. Alroy/J. Alroy/M. Uhen]
38505% 23520R. C. Hulbert, Jr. 1987. Late Neogene Neohipparion (Mammalia, Equidae) from the Gulf Coastal Plain of Florida and Texas. Journal of Paleontology 61(4):809-830 [J. Alroy/M. Sommers/J. Alroy]
1952 R. C. Hulbert, Jr. 1989. Phylogenetic Interrelationships and Evolution of North American Late Equidae. In D. R. Prothero and R. M. Schoch (eds.), The Evolution of Perissodactyls [J. Alroy/J. Alroy/M. Uhen]
57334 W. W. Korth. 2007. A new genus of beaver (Rodentia, Castoridae) from the miocene (Clarendonian) of North America and systematics of the Castoroidinae based on comparative cranial anatomy. Annals of Carnegie Museum 76(2) [J. Marcot/J. Marcot]
51726 D. R. Prothero. 2005. The Evolution of North American Rhinoceroses. 1-218 [J. Marcot/J. Marcot]
58090 D. R. Prothero and A. Pollen. 2013. New Late Miocene Fossil Peccaries From California and Nebraska. Kirtlandia 58:42-53 [J. Marcot/J. Marcot]
45368 M. O. Woodburne. 2007. Phyletic diversification of the Cormohipparion occidentale complex (Mammalia; Perissodactyla, Equidae), Late Miocene, North America, and the origin of the Old World Hippotherium datum. Bulletin of the American Museum of Natural History 306(1):1-138 [P. Wagner/P. Wagner]
6242 D. B. Wright. 1993. Evolution of sexually dimorphic characters in peccaries (Mammalia, Tayassuidae). Paleobiology 19(1):52-70 [J. Alroy/J. Alroy/J. Alroy]