This pyrite (pyritized) fossil is from Aveyron, France. This is a fossil ammonite, species Hildoceras dating to about 190 million years ago in the Jurassic Period. It is both a beautiful pyrite specimen as well as an exceptional fossil. This well defined ammonite was found in a fossil rich sedimentary layer. It was then removed, cleaned, stabilized and coated with a protective lacquer. It has a bright golden color a metallic luster and displays from all sides nicely. It measures 33 x 26 x 10 mm.