Chanac Formation

Chanac Formation
Stratigraphic range: Neogene
Type	Geological formation
Underlies	Etchegoin Formation, Kern River Beds Formation
Overlies	Santa Margarita Formation
Location
Region	San Joaquin Valley, Kern County, California
Country	United States

The Chanac Formation is a Cenozoic Era sandstone geologic formation in the southeastern San Joaquin Valley, within Kern County, California.^[1]

Geology

The Kern River Series is divided into the lower Chanac Formation unit, and the upper Kern River Beds Formation unit, with the wedge of the Etchegoin Formation in the middle in the western section.^[1] It is composed of sandstone and cobble conglomerate.^[1] It overlies the Miocene period Santa Margarita Formation.

It preserves fossils dating back to the Neogene period.^[2]

Fossil content

Mammals

Carnivorans

Carnivorans reported from the Chanac Formation
Genus	Species	Presence	Material	Notes	Images
Borophagus	B. littoralis	North Tejon Hills, Kern County, California.[3]	Left molar (LACM 16585).[3]	A borophagine dog also found in the Green Valley, Santa Margarita and Dove Spring formations.
Epicyon	E. haydeni	North Tejon Hills, Kern County, California.[3]	Nuchal fragment of skull (LACM 16581).[3]	A borophagine dog.

See also

• Geology of Kern County, California
• Neogene California
• List of fossiliferous stratigraphic units in California
• Paleontology in California

References

1. USGS.gov: "The Kern River Formation, Southeastern San Joaquin Valley, California"; Geological Survey Bulletin 1529-D; By J. Alan Bartow and Gardner M. Pittman; United States Government Printing Office, Washington, D.C.; 1983 (with map on pg. D4).
2. Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
3. Wang, Xiaoming; Tedford, Richard H.; Taylor, Beryl E. (1999). "Phylogenetic systematics of the Borophaginae (Carnivora, Canidae)". Bulletin of the AMNH (243): 9–391. hdl:2246/1588.