Greenside Quarry (Miocene of the United States)

Where: Sioux County, Nebraska (42.4° N, 103.8° W: paleocoordinates 43.1° N, 99.9° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: lower Member (Sheep Creek Formation), Hemingfordian (20.4 - 16.0 Ma)

Environment/lithology: fluvial; massive, red, sandy siltstone

• The dominant lithology of the lower part is massive, pinkish brown sandy silt and sandy clay; ledges or lenses of hard, blocky-weathering, gray sandstone alternate with beds of light-colored, non-resistant sandstone. These hard layers are not persistent but occur at varying levels as hard, sheetlike lenses.

Size class: macrofossils

Collected by Wilson (1935 - 1939?), Skinner (1940's) in 1935 - 1940's; reposited in the AMNH

Primary reference: M. F. Skinner, S. M. Skinner, and R. J. Gooris. 1977. Stratigraphy and biostratigraphy of late Cenozoic deposits in central Sioux County, western Nebraska. Bulletin of the American Museum of Natural History 158(5):263-370 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 17920: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Theriamorpha - Erinaceidae
Brachyerix macrotis Matthew 1933 hedgehog
described by Rich 1981
 Perissodactyla - Rhinocerotidae
Aphelops megalodus7 Cope 1873 rhinoceros
Teleoceras americanum7 Yatkola and Tanner 1979 rhinoceros
 Perissodactyla - Chalicotheriidae
Tylocephalonyx skinneri n. sp.1 Coombs 1979 chalicothere
 Perissodactyla - Equidae
Anchitheriinae indet.2 Leidy 1869 anchitheriine horse
Archaeohippus penultimus Matthew 1924 anchitheriine horse
Merychippus primus Osborn 1918 horse
Acritohippus tertius6 Osborn 1918 horse
Supplemental Table S1
 Artiodactyla - Moschidae
"Blastomeryx medius" = Blastomeryx gemmifer3
"Blastomeryx medius" = Blastomeryx gemmifer3 Cope 1874 musk deer
 Artiodactyla - Palaeomerycidae
Bouromeryx americanus5, Bouromeryx submilleri n. sp., "Subdromomeryx scotti n. sp." = Subdromomeryx antilopinus
Bouromeryx americanus5 Douglass 1899 ruminant
Bouromeryx submilleri n. sp. Frick 1937 ruminant
see also Frick 1937
"Subdromomeryx scotti n. sp." = Subdromomeryx antilopinus Scott 1893 ruminant
see also Frick 1937
 Artiodactyla - Antilocapridae
Merycodus sabulonis Matthew and Cook 1909 pronghorn
see also Frick 1937
 Artiodactyla - Merycoidodontidae
Merychyus relictus, "Brachycrus wilsoni n. sp." = Brachycrus laticeps9
Merychyus relictus Matthew and Cook 1909 oreodont
see Schultz and Falkenbach 1947
"Brachycrus wilsoni n. sp." = Brachycrus laticeps9 Douglass 1900 oreodont
 Carnivora - Felidae
Pseudaelurus validus8 Rothwell 2001 cat
F:AM 61827
 Carnivora - Amphicyonidae
Amphicyon sp.4 Lartet 1836 bear-dog
 Carnivora - Canidae
Leptocyon leidyi10 Tedford et al. 2009 canine
Osbornodon fricki11 Wang 1994 canid
Cynarctoides acridens12 Barbour and Cook 1914 bone-crushing dog
Protomarctus optatus12 Matthew 1924 bone-crushing dog