Fern fossil, Sphenopteris pottsvillea, Pennsylvanian age 300 million year old

Description

This is a 3.5" x 3" x 1" Pennsylvanian age, 300 million year old fossil fern named Sphenopteris pottsvillea with compound leaves of the fern imprinted on a sandy siltstone.  The imprints show great detail and the original plant material is preserved as coal.  Both sides of this piece show fern prints.   This came from a coal mine in Alabama.  Nicely presented and will make a nice addition to your collection.