This fossil fragment is of a  Platyceras dumosum  (Conrad, 1840)   spiny snail (gastropod). It was found in Clark County, Indiana USA.  Th...

  This fossil appears to be a Culmicrinus elegans (Wachsmuth & Springer, 1897) crinoid calyx. It was found in the Chester Group of Glen...

  These pictures are of a coiled crinoid fossil. It was found in the Waldron Shale of Clark County Indiana USA. The fossil dates to the Silu...