Hollow Horn Bear Quarry (Miocene of the United States)

Where: Todd County, South Dakota (43.2° N, 100.7° W: paleocoordinates 43.6° N, 98.1° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: 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

Purpose of describing collection: taxonomic analysis

PaleoDB collection 18200: authorized by John Alroy, entered by John Alroy on 05.08.1992, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• equids: Hulbert 1989 pers. commun.915 F:AM specimens: Skinner and Johnson 1984
Mammalia
 Rodentia - Castoridae
Prodipoides dividerus7 Stirton 1935 beaver
Nothodipoides planus6 Stirton 1935 beaver
 Perissodactyla - Rhinocerotidae
Teleoceras major9 Hatcher 1894 rhinoceros
Aphelops megalodus9 Cope 1873 rhinoceros
 Perissodactyla - Equidae
Hippotherium sp.1 Kaup 1832 hipparionine horse
Cormohipparion fricki12 Woodburne 2007 hipparionine horse
Pseudhipparion gratum4 Leidy 1869 hipparionine horse
pers. commun.
Nannippus sp.4 Matthew 1926 hipparionine horse
pers. commun.: "A"
Protohippus supremus4 Leidy 1869 horse
pers. commun.
Calippus martini4 Hesse 1936 horse
pers. commun.
Calippus placidus4 Leidy 1869 horse
pers. commun.
 Carnivora - Procyonidae
Arctonasua sp.2 Baskin 1982 procyonid carnivore
"A. sp. B"
 Carnivora - Amphicyonidae
Ischyrocyon sp.5 Matthew and Gidley 1904 bear-dog
 Carnivora - Canidae
Leptocyon matthewi11 Tedford et al. 2009 canine
Cynarctus crucidens Barbour and Cook 1914 bone-crushing dog
Aelurodon taxoides Hatcher 1894 bone-crushing dog
Epicyon saevus8 Leidy 1858 bone-crushing dog
confirmed by Wang et al. 1999
Carpocyon robustus Green 1948 bone-crushing dog
Paratomarctus euthos McGrew 1935 bone-crushing dog
 Ungulata - Merycoidodontidae
"Merychyus novomexicanus" = Ustatochoerus medius novomexicanus1
"Merychyus novomexicanus" = Ustatochoerus medius novomexicanus1 Frick 1929 oreodont
 Ungulata - Camelidae
Hemiauchenia sp.3 Gervais and Ameghino 1880 camel
 Ungulata - Moschidae
Longirostromeryx wellsi10 Matthew 1904 musk deer