Machaerodus Quarry (Miocene of the United States)

Also known as Machairodus Quarry; Xmas Channel

Where: Cherry County, Nebraska (42.8° N, 100.8° W: paleocoordinates 43.3° N, 98.2° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Merritt Dam Member (Ash Hollow Formation), Clarendonian (13.6 - 10.3 Ma)

Environment/lithology: terrestrial

Primary reference: 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]more details

PaleoDB collection 18245: authorized by John Alroy, entered by John Alroy on 05.08.1992, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• underlies Machaerodus Ash, dated at 9.95 +/- 0.8 Ma FT on glass
185 F:AM specimens: Skinner and Johnson 1984
unclassified
  -
"Clarendonian peccary" sp.9
new species; see also Wright 1998
Antilocaprini indet.2
postcrania listed under "Plioceros floblairi"
Mammalia
 Rodentia - Castoridae
Prodipoides katensis5 Korth 2002 beaver
"Machaeroides Quarry"
 Perissodactyla - Rhinocerotidae
Teleoceras major6 Hatcher 1894 rhinoceros
Aphelops megalodus6 Cope 1873 rhinoceros
 Perissodactyla - Equidae
Cormohipparion matthewi8 Woodburne 2007 hipparionine horse
"Hippotherium occidentale" = Cormohipparion occidentale1 Leidy 1856 hipparionine horse
JA pers. obs.
Pseudhipparion skinneri4 Webb and Hulbert 1986 hipparionine horse
pers. commun.
Neohipparion trampasense3 Edwards 1982 hipparionine horse
Calippus cerasinus4 Hulbert 1988 horse
pers. commun.
 Carnivora - Canidae
Aelurodon taxoides Hatcher 1894 bone-crushing dog
Epicyon saevus Leidy 1858 bone-crushing dog
Paratomarctus euthos McGrew 1935 bone-crushing dog
 Ungulata - Tayassuidae
Skinnerhyus shermerorum n. gen. n. sp.7
Skinnerhyus shermerorum n. gen. n. sp.7 Prothero and Pollen 2013 peccary
new species; see also Wright 1998
 Ungulata - Gelocidae
Pseudoceras skinneri2 Frick 1937 ruminant
 Ungulata - Moschidae
Parablastomeryx gregorii2 Frick 1937 musk deer