Two Large Eucalyptocrinus Crinoid Crowns

This is a nice association from the Waldron Shale of Indiana. There are two large crowns of the crinoid Eucalyptocrinus crassus, a brachiopod Homoeospira evens as well as the head of Calymene trilobite. It is Silurian in age (430 million years) and was prepared under microscope using air abrasives.