Silurian Period Pyrite Crinoid Stem

Pyrite on an unidentified crinoid stem from the Waldron Shale of Clark County Indiana, USA.  Crinoid lived in the Silurian Period.

Eucalyptocrinites Crinoid Calyx

An Eucalyptocrinites crinoid calyx cup found in the Waldron Shale of Clark County, Indiana.  My first mostly intact Silurian Period crinoid calyx.  I am as happy as a crinoid in sea urchin free waters! Fossil has not yet been prepped.

See a more intact one at this Indiana State Museum webpage

Eucalyptocrinites crassus crinoid holdfast fossil on display in Paris, France at the natural history museum.

A great source for information about Waldron Shale fossils is the Indiana State Museum database.  As of this writing, they had 134 Waldron Shale fossils listed.  It is a super public service to those of us trying to identify Waldron Shale fossils from Indiana.

Aulopora schoharie Coral

Aulopora schoharie coral fossil of the Birdsong Formation found in Benton County, Tennessee.  It lived in the Lower Devonian Period.  Thanks to Herb for the image.