This large formation of large brachiopod fossils in limestone – of the genus Rafinesquina – is out of the Waynesville Formation in Roaring Run, Warren County, Ohio. These fossils are from the Upper Ordovician period 458.4 million to 443.8 million years ago.

Dimensions: 18-1/2″L x 1-1/8″W x 11″H, Weight: 11.5 lb.