North Tejon Hills (Miocene of the United States)

Also known as Comanche Point; CIT 104, 302, 305

Where: Kern County, California (35.3° N, 118.5° W: paleocoordinates 35.2° N, 115.3° W)

• coordinate based on political unit

When: Chanac Formation, Tortonian (11.6 - 7.2 Ma)

• at roughly the 130 m level in the Tejon Hill section of Wilson and Prothero 1997, i.e., in the long reversed polarity zone overlying the normal zone including the Comanche Point fauna

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Primary reference: R. H. Tedford, T. Galusha, M. F. Skinner, B. E. Taylor, R. W. Fields, J. R. Macdonald, J. M. Rensberger, S. D. Webb, and D. P. Whistler. 1987. Faunal succession and biochronology of the Arikareean through Hemphillian interval (late Oligocene through earliest Pliocene epochs) in North America. In M. O. Woodburne (ed.), Cenozoic Mammals of North America: Geochronology and Biostratigraphy 153-210 [J. Alroy/J. Alroy/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 19466: authorized by John Alroy, entered by John Alroy on 27.09.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• not the same as Comanche Point of Savage 1955a (see)
Mammalia
 Perissodactyla - Equidae
Hipparion forcei, "Pliohippus leardi n. sp." = Dinohippus leardi
Hipparion forcei Richey 1948 hipparionine horse
presumably includes "H. cf. mohavense" and "Nannippus cf. tehonensis" of Drescher 1941 from CIT 104, which appear respectively to be early and late wear stages of the same species (JA pers. obs. 19.1.02)
"Pliohippus leardi n. sp." = Dinohippus leardi Drescher 1941 horse
see Drescher 1941
 Artiodactyla - Palaeomerycidae
Cranioceras cf. unicornis Matthew 1918 ruminant
 Artiodactyla - Antilocapridae
Paracosoryx cf. furlongi Frick 1937 pronghorn
may include "C. (Paracosoryx)" of Frick 1937 from "Chanac fauna"
 Artiodactyla - Merycoidodontidae
Ustatochoerus cf. californicus Merriam 1919 oreodont
 Carnivora - Canidae
Epicyon haydeni Leidy 1858 bone-crushing dog
exact locality not stated
Borophagus littoralis VanderHoof 1931 bone-crushing dog
CIT 104