Lost Burro Formation

The Lost Burro Formation is a Middle to Upper/Late Devonian geologic formation in the Mojave Desert of California, in the Western United States.

Lost Burro Formation Stratigraphic range: Middle to Upper Devonian
Type	Geologic formation
Underlies	Tin Mountain Limestone
Overlies	Hidden Valley Dolomite
Lithology
Primary	Dolomite
Location
Region	Mojave Desert California
Country	United States
Type section
Named for	Lost Burro Gap
Named by	McAllister (1952)

Geology

The Dolomite formation is exposed in sections of the Darwin Hills, Santa Rosa Hills, Talc City Hills, Inyo Mountains near the Cerro Gordo Mines, Panamint Range near Towne Pass, and the Argus Range. [1]

Fossils

Outcrops of the formation in Death Valley National Park have produced fossils of the placoderm Dunkleosteus terrelli, a small cladodont shark, the crushing tooth of a cochliodont, and the pteraspidid Blieckaspis priscillae.[2] [3]

References

1. Google Books: United States Geological Survey Professional Paper - "Geology and ore deposits of Inyo County, California"
2. "Death Valley National Park," Hunt, Santucci, and Kenworthy (2006); page 63.
3. Hunt, ReBecca K., Vincent L. Santucci and Jason Kenworthy. 2006. "A preliminary inventory of fossil fish from National Park Service units." in S.G. Lucas, J.A. Spielmann, P.M. Hester, J.P. Kenworthy, and V.L. Santucci (ed.s), Fossils from Federal Lands. New Mexico Museum of Natural History and Science Bulletin 34, pp. 63–69.