Xmas Quarry (Miocene of the United States)

Also known as 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: W. W. Korth. 2000. Review of Miocene (Hemingfordian to Clarendonian) mylagaulid rodents (Mammalia) from Nebraska. Annals of Carnegie Museum 69(4):227-280 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 18496: authorized by John Alroy, entered by John Alroy on 05.08.1992, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• "at least 29 catalog numbers": Skinner and Johnson 1984 - this is surely a gross underestimate
"Clarendonian peccary" sp.17
Machaerodus Quarry form; species "A" and/or "B" of Wright 1983
 Rodentia - Mylagaulidae
Pterogaulus barbarellae n. sp. Korth 2000 rodent
 Perissodactyla - Rhinocerotidae
Teleoceras major8 Hatcher 1894 rhinoceros
Aphelops megalodus8 Cope 1873 rhinoceros
 Perissodactyla - Equidae
Hippotherium sp.1 Kaup 1832 hipparionine horse
JA pers. obs. 12.7.96: new small, short notch species; my split of "occidentale" into large and small morphs appears to match arrangement of Woodburne 1996a exactly, and Woodburne assigns type to large morph
Cormohipparion matthewi n. sp.16 Woodburne 2007 hipparionine horse
Type locality listed as XMas-Kat quarries. Specimen is listed from Xmas quarry in AMNH catalog on their public website
"Hippotherium occidentale" = Cormohipparion occidentale15 Leidy 1856 hipparionine horse
Pseudhipparion gratum6 Leidy 1869 hipparionine horse
pers. commun.
Pseudhipparion skinneri14 Webb and Hulbert 1986 hipparionine horse
Neohipparion trampasense4 Edwards 1982 hipparionine horse
Protohippus cf. gidleyi6 Hulbert 1988 horse
pers. commun.
Calippus cerasinus5 Hulbert 1988 horse
Hypohippus sp.7 Leidy 1858 anchitheriine horse
 Carnivora - Canidae
Leptocyon matthewi12 Tedford et al. 2009 canine
Aelurodon taxoides13 Hatcher 1894 bone-crushing dog
Epicyon saevus13 Leidy 1858 bone-crushing dog
Epicyon haydeni13 Leidy 1858 bone-crushing dog
Paratomarctus euthos13 McGrew 1935 bone-crushing dog
"Xmas Quarry Zone"
 Carnivora - Felidae
Nimravides pedionomus2 Macdonald 1948 cat
 Proboscidea - Gomphotheriidae
"Amebelodon barbourensis n. sp." = Serbelodon barbourensis11
"Amebelodon barbourensis n. sp." = Serbelodon barbourensis11 Frick 1933 gomphothere
 Ungulata - Merycoidodontidae
Ustatochoerus major10 Leidy 1858 oreodont
 Ungulata - Tayassuidae
Skinnerhyus shermerorum9 Prothero and Pollen 2013 peccary
Machaerodus Quarry form; species "A" and/or "B" of Wright 1983
 Ungulata - Gelocidae
Pseudoceras skinneri3 Frick 1937 ruminant
 Ungulata - Palaeomerycidae
Cranioceras unicornis1 Matthew 1918 ruminant
 Ungulata - Moschidae
Parablastomeryx gregorii n. sp.3 Frick 1937 musk deer