Clayton Quarry: Clarendonian, Nebraska

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Rodentia - Castoridae
Eucastor sp. Allen 1877
FMNH
Mammalia - Rodentia - Heteromyidae
Mioheteromys agrarius n. sp. (Wood 1935)
Korth 1997
original and current combination Diprionomys agrarius
of Wood 1935 from FMNH "Quinn Canyon" locality DUPLICATE REF 2132 or 2133
Mammalia - Rodentia - Mylagaulidae
Mylagaulus sp. Cope 1878
    = Mylagaulidae indet. Cope 1881
Alroy 2002
FMNH
Mammalia - Lagomorpha - Leporidae
Hypolagus fontinalis Dawson 1958
FMNH: mentioned by Dawson 1958
Mammalia - Carnivora - Amphicyonidae
Pseudocyon sp. Lartet 1851
Hunt 1998
Mammalia - Carnivora - Mustelidae
Leptarctus wortmani Matthew 1924
Korth and Baskin 2009
F:AM 25169
Mammalia - Carnivora - Nimravidae
Barbourofelis whitfordi (Barbour and Cook 1915)
Mammalia - Carnivora - Canidae
Leptocyon matthewi Tedford et al. 2009
Tedford et al. 2009
Aelurodon taxoides Hatcher 1894
Wang et al. 1999
Epicyon saevus (Leidy 1858)
Wang et al. 1999
Paratomarctus euthos (McGrew 1935)
Wang et al. 1999
multiple specimens from "Clayton or East Clayton quarries" (so possibly not present here)
Cynarctus crucidens Barbour and Cook 1914
Wang et al. 1999
Mammalia - Merycoidodontidae
Ustatochoerus profectus (Matthew and Cook 1909)
synonym of Ustatochoerus major
Mammalia - Gelocidae
Pseudoceras skinneri Frick 1937
Webb 2008
Mammalia - Tayassuidae
Macrogenis cf. crassigenis (Matthew and Gidley 1904)
Wright 1983
probably = "Prosthennops sp." at FMNH
Mammalia - Camelidae
Aepycamelus sp. Macdonald 1956
JA pers. obs.: FMNH
Mammalia - Perissodactyla - Equidae
Protohippus supremus Leidy 1869
Hulbert 1989
pers. commun.
Calippus placidus (Leidy 1869)
Hulbert 1989
pers. commun.
Calippus martini Hesse 1936
Hulbert 1989
pers. commun.
Pseudhipparion gratum (Leidy 1869)
Hulbert 1989
pers. commun.: also seen by JA at FMNH
Neohipparion affine (Leidy 1869)
Hulbert 1989
pers. commun.
Nannippus sp. (Matthew 1926)
Hulbert 1989
pers. commun.: "A"
Hippotherium sp. Kaup 1832
JA pers. obs.: FMNH
Mammalia - Perissodactyla - Rhinocerotidae
Teleoceras sp. Hatcher 1894
JA pers. obs.: FMNH
see common names

Geography
Country:United States State/province:Nebraska County:Brown
Coordinates: 42.7° North, 100.0° West (view map)
Paleocoordinates:43.1° North, 97.4° 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
Reason for describing collection:biostratigraphic analysis
Taxonomic list comments:probably the same as the FMNH "Quinn Canyon" site; the quarry is in Quinn Canyon and no other FMNH collection from this area is mentioned by Skinner and Johnson; this locality is said by Korth 1997a to be in the Cap Rock Member based on the authority of Skinner and Johnson, which may relate to the fact that these authors place Clayton Quarry very low in the Merritt Dam Member
FMNH specimens seen by JA on 30.5.91
equids: Hulbert 1989 pers. commun.
270 F:AM specimens (Skinner and Johnson 1984), but list is mostly based on FMNH
Metadata
Database number:18095
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:
6193. M. F. Skinner and F. W. Johnson. 1984. Tertiary stratigraphy and the Frick Collection of fossil vertebrates from north-central Nebraska. Bulletin of the American Museum of Natural History 178(3):1-368 [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]
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]
1977 R. M. Hunt, Jr. 1998. Amphicyonidae. 196-227 [J. Alroy/J. Alroy/J. Alroy]
2132 W. W. Korth. 1997. A new subfamily of primitive pocket mice (Rodentia, Heteromyidae) from the middle Tertiary of North America. Paludicola 1(2):33-66 [J. Alroy/J. Alroy/J. Marcot]
36420 W. W. Korth and J. A. Baskin. 2009. A new species of Leptarctus (Carnivora, Mustelidae) from the late Clarendonian (late Miocene) of Kansas. Annals of Carnegie Museum 78(1):29-44 [J. Alroy/J. Alroy]
3063 C. B. Schultz and C. H. Falkenbach. 1941. Ticholeptinae, a new subfamily of oreodonts. Bulletin of the American Museum of Natural History 79(1):1-105 [J. Alroy/J. Alroy/J. Marcot]
52058 R. H. Tedford, X. Wang, and B. E. Taylor. 2009. Phylogenetic Systematics of the North American Fossil Caninae (Carnivora: Canidae). Bulletin of the American Museum of Natural History 325:1-218 [J. Marcot/J. Marcot/G. Lloyd]
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]
36064 S. D. Webb. 2008. Revision of the extinct Pseudoceratinae (Artiodactyla: Ruminantia: Gelocidae). Bulletin of the Florida Museum of Natural History 48(2):17-58 [J. Alroy/J. Alroy]
3773 D. B. Wright. 1983. Later Miocene Tayassuidae (Artiodactyla, Mammalia) of North America. University of Nebraska, M. S. thesis 1-350 [J. Alroy/J. Alroy/J. Sepkoski]