Amaltheus sp. ammonite shell found in Lorraine, France, dating from 185 million years (Upper Pliensbachian). Ammonites are extinct marine animals which lived between 380 and 65 million years ago. They are distantly related to the modern-day nautilus. They lived in coastal waters and inland seas. The animal lived in the last chamber of its coiled shell. This ammonite is in a botryoidal encrustation of microcrystalline pyrite. Collection Jean-Philippe et Francois-Xavier Blouet, paleontologists.