This specimen was found in a gravel driveway in Texas outside of Yorktown. It is of unknown location. However, gravel isn't imported into Texas, Therefore, it came from somewhere in texas. The rock was already split open and specimen was laying on the ground. Me and my cousin (he's the one that found it) cannot tell if it is a Wing or a Fin? If it was my guess it would be from the Devonian into the Carboniferous Periods.