Madagascar Ammonite (polished), Cleoniceras sp, Cretaceous 100ma

This ammonite Has been polished to enhance the detail and colours within, these ammonites are not only fascinating but prepped in this way make superb decorative pieces. This Ammonite comes from Madagascar, Tulear, Majunga.
Ammonites are an extinct sea dwelling cephalopod and these ancient molluscs are closely related to the Nautilus which are still alive in our seas today. What you see with these fossils is the detailed hard shell that would have protected the soft bodied tissue inside. As with most cephalopods these animals would have moved through the waters by projecting a jet of water in the opposite direction to the direction they need to move.