Osbornoceros Quarry (Neogene of the United States)

Also known as Leyden Quarry; Lyden Quarry; ESP. 251-535

Where: Rio Arriba County, New Mexico (36.5° N, 107.0° W: paleocoordinates 36.9° N, 105.3° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Chamita Formation, Late/Upper Hemphillian (10.3 - 4.9 Ma)

Environment/lithology: terrestrial

Reposited in the AMNH

• Frick collection made in 1935

Primary reference: R. H. Tedford and S. F. Barghoorn. 1993. Road Log Neogene geology of the EspaƱola Basin, New Mexico. New Mexico Museum of Natural History Bulletin 2:169-178 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 19473: authorized by John Alroy, entered by John Alroy on 30.04.1994, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• identity with Leyden Quarry based on placement of O. osborni type by Frick 1937

•stratigraphic level relative to type Chamita section is NOT determinate but is assumed based on fauna

Mammalia
 Perissodactyla - Rhinocerotidae
Aphelops mutilus3 Matthew 1924 rhinoceros
"Opposite Lyden Quarry"
 Carnivora - Mustelidae
Chamitaxus avitus n. gen. n. sp.2
Chamitaxus avitus n. gen. n. sp.2 Owen 2006 badger
 Carnivora - Canidae
Vulpes stenognathus Savage 1941 fox
Canis ferox4 Miller and Carranza-Castaneda 1998 canine
Borophagus secundus1 VanderHoof 1931 bone-crushing dog
 Ungulata - Camelidae
Megatylopus sp. Matthew and Cook 1909 camel
 Ungulata - Antilocapridae
Plioceros blicki Frick 1937 pronghorn
Osbornoceros osborni n. sp. Frick 1937 pronghorn
see Frick 1937