Carpoid Fossil?

 

My cousin Kenny recently found this fossil in an Ordovician Period area of Indiana USA. Not sure what it is, maybe a worn carpoid fossil?

 

https://louisvillefossils.blogspot.com/2009/11/part-of-carpoid.html

Calymene Pygidium & Thorax Trilobite Fossils

 

These pictures are of two trilobite fossils found in the Waldron Shale. They appear to be the pygidium and thorax remains of two Calymene (Brongniart, 1822) trilobites. These creatures existed in Silurian Period seas in what is now known as Clark County, Indiana, USA.

Megastrophia concava Brachiopod Fossil

This fossil appears to be a Megastrophia concava (Hall, 1857) brachiopod. The surface has some line patterns that might be from some sort of bryozoan like Hederella. Fossil was found middle Devonian period Jeffersonville Limestone of Clark County, Indiana USA.