Lyriocrinus melissa Crinoid Fossil

A very nicely preserved crinoid fossil called Lyriocrinus melissa (Hall, 1863).  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.

 

Leptaena rhomboidalis Brachiopod Fossil

Today's post is of a brachiopod fossil called Leptaena rhomboidalis (Wahlenberg, 1818).  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.

Desmograptus Graptolite Fossil

This post is a fossil called Desmograptus sp. (Hopkinson, 1875) graptolite. Fossil found in the Waldron Shale of Clark County Indiana USA. It dates to the Silurian Period. The fossil is black due to carbon-film preservation.

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