Cheirarus dilatatus Trilobite Fossil

This post is of a trilobite cephalon fossil called Cheirarus dilatatus (Raymond, 1916). Fossil was found in the Waldron Shale of Clark County Indiana USA. It dates to the Silurian Period.

Fossil on display at Falls of the Ohio Interpretative Center Clarksville Indiana USA as of December 2022.

Crinoid Holdfast on a Crinoid Calyx

This post is of an Eucalyptocrinites (Goldfuss, 1831) holdfast fossil that grew on a fallen Eucalyptocrinites crassus (Hall, 1863) calyx cup. Fossil found in the Waldron Shale of Clark County Indiana USA. It dates to the Silurian Period.

Fossil on display at Falls of the Ohio Interpretative Center Clarksville Indiana USA as of December 2022.

Caryocrinites persculptis Blastoid Fossil

This post is of a cystoid fossil called Caryocrinites persculptis (Springer). Fossil found in the Waldron Shale of Clark County Indiana USA. It dates to the Silurian Period.

 

Fossil on display at Falls of the Ohio Interpretative Center Clarksville Indiana USA as of December 2022.