Stage Hill I ( of the United States)

Also known as Millenium's End Quarry; UNSM Sf-105; Wildcat Ridge

Where: Scotts Bluff County, Nebraska (41.7° N, 103.7° W: paleocoordinates 42.6° N, 98.7° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Wildcat Hills Beds Formation (Arikaree Group), Harrisonian (24.8 - 20.4 Ma)

• "late late Arikareean" (= Harrisonian)

•"upper Arikaree Group"

• group of beds-level stratigraphic resolution

Environment/lithology: "channel"; sandstone and conglomerate

• "fluvial channel fill" (Hunt 2002)
• "epiclastic sand and gravel" within a "crossbedded sand and gravel" sequence

Size class: macrofossils

Reposited in the UNSM

Collection methods: quarrying,

Primary reference: B. E. Bailey. 2004. Biostratigraphy and biochronology of early Arikareean through late Hemingfordian small mammal faunas from the Nebraska Panhandle and adjacent areas. Paludicola 4(3):81-113 [J. Alroy/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 28043: authorized by John Alroy, entered by John Alroy on 21.01.2003, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• fauna apart from mammals not discussed
Mammalia
 Carnivora - Palaeogalidae
Palaeogale sp. von Meyer 1846 carnivoran
 Carnivora - Amphicyonidae
Ysengrinia americana1 Wortman 1901 bear-dog
presumably Ysengrinia sp. of Bailey 2004
 Carnivora - Mustelidae
Zodiolestes sp. Riggs 1942 mustelid carnivore
 Carnivora - Ursidae
Cephalogale sp. Jourdan 1862 bear
 Carnivora - Canidae
Phlaocyon sp. Matthew 1899 bone-crushing dog
said to be new
Cynarctoides acridens Barbour and Cook 1914 bone-crushing dog
cf. Desmocyon sp. Wang et al. 1999 bone-crushing dog
said to be new
 Perissodactyla - Equidae
Kalobatippus agatensis Osborn 1918 anchitheriine horse
Archaeohippus sp. Gidley 1906 anchitheriine horse
Parahippus sp. Leidy 1858 anchitheriine horse
 Perissodactyla - Chalicotheriidae
Moropus sp. Marsh 1877 chalicothere
 Perissodactyla - Rhinocerotidae
cf. Menoceras sp. Troxell 1921 rhinoceros
 Perissodactyla - Tapiridae
Miotapirus harrisonensis Schlaikjer 1937 tapir
 Artiodactyla - Camelidae
Michenia sp. Frick and Taylor 1971 camel
Oxydactylus sp. Peterson 1904 camel
 Artiodactyla - Merycoidodontidae
"Merychyus cf. siouxensis" = Paramerychyus harrisonensis
"Merychyus cf. siouxensis" = Paramerychyus harrisonensis Peterson 1907 oreodont
 Artiodactyla - Anthracotheriidae
Arretotherium acridens Douglass 1902 anthracothere
 Artiodactyla - Tayassuidae
Hesperhys sp. Douglass 1903 peccary
 Artiodactyla - Protoceratidae
Syndyoceras cooki Barbour 1905 protoceratid
 Artiodactyla - Moschidae
Pseudoblastomeryx advena3 Matthew 1907 musk deer
 Artiodactyla - Palaeomerycidae
Barbouromeryx sp. Frick 1937 ruminant
said to be new
 Theriamorpha - Soricidae
Pseudotrimylus sp. Gureev 1971 shrew
 Theriamorpha - Erinaceidae
Parvericius sp. Koerner 1940 hedgehog
 Rodentia - Castoridae
Priusaulax browni n. sp.2 Korth and Bailey 2006 beaver
said to be new
Palaeocastor sp. Leidy 1869 beaver
 Rodentia - Heteromyidae
Mookomys sp. Wood 1931 rodent
 Rodentia - Cricetidae
Leidymys sp. Wood 1936 mouse
 Rodentia - Allomyidae
Alwoodia sp. Rensberger 1983 rodent
 Lagomorpha - Leporidae
Archaeolagus sp. Dice 1917 rabbit