Sunday, September 25, 2011

Baby Eucalyptocrinus Crinoid

This crinoid calyx was almost found intact. One side of it is chipped off.  A small ring is at the top where the arms folded together.  Found in the Waldron Shale of Clark County, Indiana which dated to the Silurian Period.  As can be seen with the included scale, this calyx is quite small.  It is an Eucalyptocrinus crassus (Hall, 1863).