Description
12 cm x 11 cm x approx. 3 cm thick; 2 pounds, 4.3 ounces. Sharp resolution, deep relief Multiple Crinoid Fossil, Indian Creek, Montgomery County, Indiana; Harrodsbutg Formation (Harrodsburg Limestone), Mississipian Subperiod. Macrocrinus mundulus, Agaricocrinus americanus, Aulocrinus agassizi. Found there sometime prior to 1975. Very fine detail; a multi-crinoid specimen which certainly fossilized relative quickly. Detailed small structures are visible; zoom on images. Deep relief. Scarce thus from this location, and Aulocrinus agassizi is one of the less common crinoids (‘Sea Lilies”). The Mississippian (also known as Lower Carboniferous or Early Carboniferous) Subperiod, earliest of the carboniferous subperiods, which lasted from roughly 358.9 to 323.2 million years ago. Specimens are of Phylum: Echinodermata, Subphylum: Crinozoa, and Class: Crinoidea. In outstanding condition; see images. L-CC
