Bluejay Quarry (Miocene of the United States)

Also known as UNSM Ap-112

Where: Antelope County, Nebraska (42.4° N, 98.1° W)

• Paleocoordinates: 45.0° N, 92.8° W (Wright 2013)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Merritt Dam Member (Ash Hollow Formation), Late/Upper Clarendonian (12.5 - 9.4 Ma)

• single channel fill within a ca. 25 ft sandstone unit; stratigraphic position based on Korth 1997b

• bed-level stratigraphic resolution

Environment/lithology: "channel"; sandstone

• illustrated as within or just above a channel lag
• sand with siliceous tubules

Size classes: macrofossils, mesofossils

Reposited in the UNSM

Primary reference: 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]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 18066: authorized by John Alroy, entered by John Alroy on 05.08.1992, edited by Jonathan Marcot

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Proboscidea - Gomphotheriidae
Gomphotheriidae indet.
Gomphotheriidae indet. Hay 1922 gomphothere
 Soricomorpha - Talpidae
Domninoides mimicus, cf. Mystipterus sp.
Domninoides mimicus Wilson 1968 mole
cf. Mystipterus sp. Hall 1930 mole
 Soricomorpha - Soricidae
Soricidae indet.
Soricidae indet. Fischer 1814 shrew
 Tribosphenida - Erinaceidae
Untermannerix copiosus, Metechinus amplior
Untermannerix copiosus Rich 1981 hedgehog
Metechinus amplior Rich 1981 hedgehog
 Carnivora - Amphicyonidae
cf. Ischyrocyon sp.
cf. Ischyrocyon sp. Matthew and Gidley 1904 bear-dog
 Carnivora - Canidae
Epicyon cf. saevus, Leptocyon matthewi5
Epicyon cf. saevus Leidy 1858 bone-crushing dog
confirmed by Wang et al. 1999
Leptocyon matthewi5 Tedford et al. 2009 canine
 Perissodactyla - Rhinocerotidae
Teleoceras major
Teleoceras major Hatcher 1894 rhinoceros
 Perissodactyla - Equidae
Equidae indet.1, Hypohippus sp., Calippus sp., Protohippus supremus1, Pliohippus cf. pernix, Pseudhipparion gratum6, Hippotherium sp.1
Equidae indet.1 Gray 1821 horse
Hypohippus sp. Leidy 1858 anchitheriine horse
Calippus sp. Matthew and Stirton 1930 horse
Protohippus supremus1 Leidy 1869 horse
Pliohippus cf. pernix Marsh 1874 horse
Pseudhipparion gratum6 Leidy 1869 hipparionine horse
Hippotherium sp.1 Kaup 1832 hipparionine horse
 Artiodactyla - Tayassuidae
Tayassuinae indet.1
Tayassuinae indet.1 Palmer 1897 peccary
 Artiodactyla - Camelidae
Megatylopus sp., Pliauchenia magnifontis, Procamelus grandis
Megatylopus sp. Matthew and Cook 1909 camel
Pliauchenia magnifontis Gregory 1939 camel
Procamelus grandis Gregory 1939 camel
 Artiodactyla - Merycoidodontidae
"Merychyus major" = Ustatochoerus major1
"Merychyus major" = Ustatochoerus major1 Leidy 1858 oreodont
 Artiodactyla - Moschidae
Longirostromeryx cf. wellsi1
Longirostromeryx cf. wellsi1 Matthew 1904 musk deer
 Artiodactyla - Dromomerycidae
Cranioceras unicornis
Cranioceras unicornis Matthew 1918 ruminant
 Rodentia - Cricetidae
Pseudomyscus bathygnathus n. sp.3, Copemys sp.3, "Tregomys cf. pisinnus" = Copemys pisinnus1
Pseudomyscus bathygnathus n. sp.3 Korth 1997 rodent
Copemys sp.3 Wood 1936 rodent
compared to C. esmeraldensis, C. mariae and C. longidens
"Tregomys cf. pisinnus" = Copemys pisinnus1 Wilson 1968 rodent
 Rodentia - Mylagaulidae
Mylagaulidae indet.4
Mylagaulidae indet.4 Cope 1881 rodent
 Rodentia - Castoridae
"Eucastor planus" = Nothodipoides planus
"Eucastor planus" = Nothodipoides planus Stirton 1935 beaver
"advanced"
 Rodentia - Geomyidae
"Phelosaccomys hibbardi" = Parapliosaccomys hibbardi3
"Phelosaccomys hibbardi" = Parapliosaccomys hibbardi3 Storer 1973 pocket gopher
 Rodentia - Heteromyidae
Cupidinimus prattensis1, Cupidinimus cf. tertius3, Perognathus cf. minutus3
Cupidinimus prattensis1 Korth 1998 rodent
Cupidinimus cf. tertius3 Hall 1930 rodent
Perognathus cf. minutus3 James 1963 pocket mouse
 Rodentia - Sciuridae
Spermophilus cyanocittus n. sp.3, Cynomyoides vatis n. sp.2
Spermophilus cyanocittus n. sp.3 Korth 1997 ground squirrel
may include "cf. Ammospermophilus sp."
Cynomyoides vatis n. sp.2 Korth 1996 squirrel
may include "Marmota cf. vetus"
 Lagomorpha - Ochotonidae
Hesperolagomys sp.
Hesperolagomys sp. Clark et al. 1964 pika
 Lagomorpha - Leporidae
Archaeolaginae indet.1
1Alroy 2002; 2Korth 1996; 3Korth 1997; 4Korth 2000; 5Tedford et al. 2009; 6Voorhies 1974