Bluejay Quarry: Late/Upper Clarendonian, Nebraska

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Proboscidea - Gomphotheriidae
Gomphotheriidae indet. Hay 1922
Mammalia - Perissodactyla - Rhinocerotidae
Teleoceras major Hatcher 1894
Mammalia - Perissodactyla - Equidae
Parahippus sp. (Leidy 1858)
    = Equidae indet. Gray 1821
Alroy 2002
Neohipparion occidentale (Leidy 1856)
Voorhies 1974
    = Cormohipparion occidentale Leidy 1856
Voorhies 1990
    = Hippotherium sp. Kaup 1832
Alroy 2002
Pseudhipparion gratum (Leidy 1869)
Voorhies 1974
Pliohippus cf. pernix Marsh 1874
Astrohippus cf. martini (Hesse 1936)
Voorhies 1974
    = Calippus sp. Matthew and Stirton 1930
Voorhies 1990
original and current combination Protohippus (Calippus)
Protohippus simus Gidley 1906
    = Protohippus supremus Leidy 1869
Alroy 2002
Hypohippus sp. (Leidy 1858)
original and current combination Anchitherium (Hypohippus)
Mammalia - Palaeomerycidae
Cranioceras unicornis Matthew 1918
Mammalia - Moschidae
Longirostromeryx cf. merriami Frick 1937
    = Longirostromeryx cf. wellsi Matthew 1904
Alroy 2002
Mammalia - Tayassuidae
Prosthennops sp. Matthew and Gidley 1904
    = Tayassuinae indet. Palmer 1897
Alroy 2002
Mammalia - Merycoidodontidae
Ustatochoerus major (Leidy 1858)
    = Merychyus major Leidy 1858
Alroy 2002
recombined as Ustatochoerus major
Mammalia - Camelidae
Procamelus grandis Gregory 1939
Pliauchenia magnifontis Gregory 1939
Megatylopus sp. (Matthew and Cook 1909)
original and current combination Pliauchenia (Megatylopus)
Mammalia - Carnivora - Canidae
Epicyon cf. saevus (Leidy 1858)
confirmed by Wang et al. 1999
Leptocyon sp. Matthew 1918
    = Leptocyon matthewi Tedford et al. 2009
Tedford et al. 2009
Mammalia - Carnivora - Amphicyonidae
cf. Ischyrocyon sp. Matthew and Gidley 1904
Mammalia - Talpidae
cf. Mystipterus sp. Hall 1930
Domninoides mimicus Wilson 1968
Mammalia - Soricidae
Soricidae indet. Fischer 1814
Mammalia - Erinaceidae
Metechinus amplior Rich 1981
Untermannerix copiosus Rich 1981
Mammalia - Rodentia - Cricetidae
Copemys sp. Wood 1936
Korth 1997
compared to C. esmeraldensis, C. mariae and C. longidens
Copemys pisinnus Wilson 1968
    = Tregomys cf. pisinnus Wilson 1968
Alroy 2002
original and current combination Copemys pisinnus
see also Korth 1997b
Pseudomyscus bathygnathus n. sp. Korth 1997
Korth 1997
Mammalia - Rodentia - Geomyidae
Geomyidae indet. Bonaparte 1845
    = Phelosaccomys hibbardi Storer 1973
Korth 1997
recombined as Parapliosaccomys hibbardi
Mammalia - Rodentia - Heteromyidae
Perognathus sp. Maximillian 1839
    = Perognathus cf. minutus James 1963
Korth 1997
Cupidinimus sp. Wood 1935
    = Cupidinimus prattensis Korth 1998
Alroy 2002
said to be new and identical to then-undescribed Pratt Quarry species; "C.
Cupidinimus sp. Wood 1935
    = Cupidinimus cf. tertius Hall 1930
Korth 1997
Mammalia - Rodentia - Castoridae
Eucastor sp. Allen 1877
Voorhies 1974
"advanced"
    = Eucastor planus Stirton 1935
Voorhies 1990
recombined as Nothodipoides planus
see also Korth 1997b
Mammalia - Rodentia - Mylagaulidae
Mylagaulus cf. monodon Cope 1881
    = Mylagaulidae indet. Cope 1881
Korth 2000
see also Korth 1997b
Mammalia - Rodentia - Sciuridae
Cynomyoides vatis n. sp. Korth 1996
Korth 1996
may include "Marmota cf. vetus" (1 measurement)
Spermophilus cyanocittus n. sp. Korth 1997
Korth 1997
may include "cf. Ammospermophilus sp."
Mammalia - Lagomorpha - Ochotonidae
Hesperolagomys sp. Clark et al. 1964
Mammalia - Lagomorpha - Leporidae
Hypolagus sp. Dice 1917
    = Archaeolaginae indet.
Alroy 2002
see common names

Geography
Country:United States State/province:Nebraska County:Antelope
Coordinates: 42.4° North, 98.1° West (view map)
Paleocoordinates:42.8° North, 95.5° West
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period:Neogene Epoch:Miocene
10 m.y. bin:Cenozoic 5-6
*Period:Tertiary
Key time interval:Late/Upper Clarendonian
Age range of interval:12.50000 - 9.40000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:Ogallala Formation:Ash Hollow Member:Merritt Dam
Local section:ValAH Local bed:6
Local order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: single channel fill within a ca. 25 ft sandstone unit; stratigraphic position based on Korth 1997b
Lithology and environment
Primary lithology: sandstone
Lithology description: sand with siliceous tubules
Environment:"channel"
Geology comments: illustrated as within or just above a channel lag
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:general faunal/floral analysis
Museum repositories:UNSM
Metadata
Also known as:UNSM Ap-112
Database number:18066
Authorizer:J. Alroy, J. Marcot Enterer:J. Alroy, J. Marcot
Modifier:M. Carrano Research group:vertebrate
Created:1992-08-05 00:00:00 Last modified:2018-02-05 15:24:07
Access level:the public Released:1992-08-05 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
3510. M. R. Voorhies. 1990. Vertebrate biostratigraphy of the Ogallala Group in Nebraska. In T. C. Gustavson (ed.), Geologic Framework and Regional Hydrology: Upper Cenozoic Blackwater Draw and Ogallala Formations, Great Plains 115-151 [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]
2131 W. W. Korth. 1996. A New Genus of Prairie Dog (Sciuridae, Rodentia) From the Miocene (Barstovian of Montana and Clarendonian of Nebraska) and the Classification of Nearctic Ground Squirrels (Marmotini). Transactions of the Nebraska Academy of Sciences 23:109-113 [J. Alroy/J. Alroy/M. Uhen]
2133 W. W. Korth. 1997. Additonal rodents (Mammalia) from the Clarendonian (Miocene) of northcentral Nebraska and a review of Clarendonian rodent biostratigraphy of that area. Paludicola 1(3):97-111 [J. Alroy/J. Alroy/M. Uhen]
2143 W. W. Korth. 2000. Review of Miocene (Hemingfordian to Clarendonian) mylagaulid rodents (Mammalia) from Nebraska. Annals of Carnegie Museum 69(4):227-280 [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]
10078 M. R. Voorhies. 1974. Fossil pocket mouse burrows in Nebraska. American Midland Naturalist 91(2):492-498 [J. Alroy/J. Alroy/J. Alroy]