A stunning example of a highly pyritised ammonite fossil of the species Eoderoceras (Eteoderoceras) armatum from the world-famous Jurassic Coast beach of Charmouth, Dorset UK.
The fossil measures 46 mm (1.8 inches) across. It is perfectly preserved to the centre on both sides, which is very unusual in this species. The suture lines are clearly visible and very striking. The ribs are well defined and it has a wonderful golden colour and shine. The specimen is exceptionally uncommon as it has some major pathological deformity in the ways the inner whorls grew when the ammonite was alive. The distortion is clear when the shell is viewed from the keel side. These are very popular ammonites but are becoming hard to find due to lack of erosion of the right layers in the cliffs. This one is a real beauty and a one-off example.
Around 196 million years old, this fossil would make a wonderful addition to any collection.