A stunning example of a highly pyritised ammonite fossil of the species Crucilobiceras densinodulum from the world-famous Jurassic Coast beach of Charmouth, Dorset UK.
The fossil measures 32 mm (1.25 inches) across with which is large for this species. The ammonite is well-preserved on both sides with detailed ribbing and suture lines. This one also has some of the original shell on top of the pyrite preserved as a calcite film. These ammonites are becoming much harder to find these days due to lack of erosion of the right layers of rock.
Around 196 million years old, this fossil would make a wonderful addition to any collection.