Ammonites are the ancient equivalent to the modern day chambered nautilus.  Ammonites lived approx. 400 million years ago.  These sea faring squids built a chambered shell in which they would pump air into the empty chambers and float at different levels of the ocean in search of food.  This ammonite pair is from Madagascar. 2" x 1 1/2" in size. 

Ammonite (Fossil) pair

SKU: S7001