This fossil is of a trilobite cephalon. The trilobite is a Bumastus . Fossil was found in the Silurian aged Waldron Shale of Clark County ...

This branching bryozoan fossil appears to be a  Thamniscus niagarensis . It was found in the Silurian aged Waldron Shale of Clark County ...

This fossil appears to be a Exogyra cancellata  pelecypod fossil found in the Coon Creek Formation of Mississippi or Tennessee, USA. The ...