San Timoteo Formation

Last updated
San Timoteo Formation
Type Formation
Location
Region California
Country United States

The San Timoteo Formation, also called the San Timoteo Beds, is a geologic formation in California.

Contents

History

Part of the wider San Timoteo Badlands, San Timoteo Formation was initially excavated in San Timoteo Canyon under by a team sponsored by Childs Frick from 1916 to 1921. [1] [2]

Geology

The San Timoteo Formation represents Pliocene and Early Pleistocene sediments, mostly sandstone. The Formation overlies the late Miocene and early Pliocene Mt. Eden Formation (Jack Rabbit Trail & Eden Hot Springs localities, corresponding to the Hemphillian and Blancan faunal stages). [2]

Fossils

Fossils of Irvingtonian prehistoric mammals were found in the San Timoteo Formation (El Casco, Mammoth and Shutt Ranch localities). [2] [3] [4] [5] These include:

Fossils have also been recovered from the El Casco Substation locality, which was dated to 1.4Mya. Recovered specimens include Smilodon gracilis , Homotherium , two ground sloths, two types of camels, a llama, horse, and deer. Plant fossils include birch, pine, sycamore and oak trees. [7] [8] [9]

See also

References

  1. ↑ "The Bone Mine". The Banning Record. 1918-03-07. p. 2. Retrieved 2023-11-17.
  2. 1 2 3 Albright, L. Barry; Kendall, Jr., Arthur (2000-08-03). Biostratigraphy and Vertebrate Paleontology of the San Timoteo Badlands, Southern California. University of California Press. doi:10.1525/california/9780520098367.003.0001. ISBN   978-0-520-09836-7.
  3. ↑ "San Timoteo Badlands". www.utep.edu. Retrieved 2024-07-22.
  4. ↑ "Big Pine Citizen 2 March 1918 — California Digital Newspaper Collection". cdnc.ucr.edu. Retrieved 2023-11-17.
  5. ↑ McComas, Katie (8 May 2019). "Paleontological Records Search – Gilman Springs Median and Shoulder Widening Project" (PDF)– via San Diego Natural History Museum.
  6. ↑ Scott, Eric; Cox, Shelley M. (May 24, 1993). "Arctodus simus (Cope, 1879) from Riverside County, California" (PDF). PaleoBios. 15 (2): 27–36.
  7. ↑ "The Associated Press: Calif. utility stumbles on 1.4M-year-old fossils". 2010-09-24. Archived from the original on 2010-09-24. Retrieved 2024-07-23.
  8. ↑ "El Casco Substation". LSA. Retrieved 2024-07-23.
  9. ↑ "Southern California Edison Discovers Most Comprehensive Collection of Fossils of its Era in Southern California". Edison International | Newsroom. Retrieved 2024-07-23.


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