Monday, June 6, 2022

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.