The Ordovician Period brachiopod found near Louisville, Kentucky. These specimens were found in the Grant Lake Formation. It is called Rafinesquina and is probably named after the French biologist: Constantine Rafinesque. Interesting fact is that while he died in Philadelphia, his body was later transferred back to Lexington, Kentucky. He is buried at Transylvania University there where he taught in the early 1800s.
These specimens were cleaned a few days ago using air abrasive cleaning techniques.