This fossil vertabrae was found at the base of the Gay Head cliffs of Aquinnah, Massachusetts, a Cretaceous, Miocene and Pleistocene outcropping thought to have been raised by the glacier. The Miocene marine vertabra commonly produced by these cliffs are much darker and more eroded which leads me to wonder whether this vertabra is from the Pleistocene era rather than Miocene. In which case it could be any number of megafauna or marine animals. Any ideas? My guess is shark, but a camel fossil wa