Ceja del Rio Puerco (Miocene to of the United States)

Where: Sandoval County, New Mexico (35.7° N, 107.0° W: paleocoordinates 36.3° N, 104.3° W)

• coordinate based on political unit

When: Cerro Conejo Member (Zia Formation), Barstovian to Barstovian (16.3 - 9.4 Ma)

• said to be late Barstovian to early Clarendonian

Environment/lithology: terrestrial

Primary reference: T. E. Williamson and G. S. Morgan. 1995. New Mexico Geology 17(2) [J. Alroy/J. Alroy]more details

PaleoDB collection 19286: authorized by John Alroy, entered by John Alroy on 05.08.1996, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• based on Tedford 1981, this is from the same geographic area and unit as Rincon Quarry (see)
apparently the "Middle Red Member" of Williamson and Morgan 1995 is the same as the "Cerro Conejo Member" of Williamson and Morgan 2001
possibly from this locality: Phelosaccomys neomexicanus Korth and Chaney 1999: "NW1/4, sec. 20, T14N, R1E, Pojoaque Member equivalent, Tesuque Formation, Santa Fe Group, Sandoval County"
Mammalia
 Proboscidea - Mammutidae
Gomphotherium obscurum3 Leidy 1869 mastodon
 Rodentia - Castoridae
Eucastor sp. Allen 1877 beaver
 Carnivora - Canidae
Leptocyon vafer2 Leidy 1858 canine
"Ceja Prospect", "North Rio Puerco, Cerro Conejo Formation"
Leptocyon vafer3 Leidy 1858 canine
 Carnivora - Mustelidae
Martes sp.3 Frisch 1775 marten
 Artiodactyla - Camelidae
cf. Procamelus sp.3 Leidy 1858 camel
Michenia sp. Frick and Taylor 1971 camel
Protolabis sp.3 Cope 1876 camel
 Artiodactyla - Antilocapridae
cf. Ramoceros sp.3 Frick 1937 pronghorn
 Perissodactyla - Rhinocerotidae
Teleoceras brachyrhinum1 Prothero 2005 rhinoceros
Peraceras sp.3 Cope 1880 rhinoceros
Peraceras profectum1 Matthew 1899 rhinoceros
 Perissodactyla - Equidae
Equidae indet. Gray 1821 horse