This picture is of an Agaricocrinus splendens (Miller & Gurley) crinoid fossil. It was found in the Edwardsville Formation of Montgome...

This picture is of a Latzelia primordialis (Scudder, 1890) centipede fossil cast. It was found in Carbondale Formation of Grundy County, Ill...

  This picture is of an Euproops danae (Meek & Worthen, 1868) horseshoe crab fossil. It was found in Carbondale Formation of Grundy Coun...