Crinoid Stems

Lower Mississippian Tin Mountain Limestone

Inyo County, California

Crinoid columnals from the Lower Mississippian Tin Mountain Limestone, Inyo County, California; the five-sided, star-like structure in the center of each columnal is where the axial canal existed in actual life--the central nerve and circulatory system that extended through the crinoid column.

Return To Fossils In Death Valley National Park