| Reddish-brown crinoid stems set in a bioclastic (composed mainly of fossil fragments) calcium carbonate matrix from the Lower Mississippian Tin Mountain Limestone, Inyo County, California. |
| Reddish-brown crinoid stems set in a bioclastic (composed mainly of fossil fragments) calcium carbonate matrix from the Lower Mississippian Tin Mountain Limestone, Inyo County, California. |