Upper Devonian To Lower Mississippian Pilot Shale

Eurkea County, Nevada, and Millard County, Utah

Conodonts (minute tooth or jawlike structures, unrelated to modern jaws, that served as a unique food-gathering apparatus in an extinct lamprey eel-like animal) from the upper Devonian to lower Mississippian Pilot Shale of northern Eureka County, Nevada (a number of miles north of White Pine County, Nevada) and western Millard County, Utah (a number of miles east of the eastern border of White Pine County, Nevada). Photograph courtesy David Leigh Clark; I edited and processed the image through photoshop.

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