These images are of a Leptaena waldronensis? brachiopod that has two Cornulites sp. worm tubes attached. It somewhat rare to find the Cornulites worm tubes on fossils found in the Clark County, Indiana Waldron Shale. These fossils date to the Silurian Period (425-420 million years ago).
I encountered this fossil while volunteering at Earth Discovery Day at the Falls of the Ohio State Park in Clarksville, Indiana, USA. It is a good event to help the general public to learn about fossils and minerals found on our planet. The specimen shown was found by visitor on August 24, 2013.
