Ammonite Fossil Both halves  - Madagascar - cca 12x10 cm 

Ambatolafia, Mahajanga Province, Madagascar

Here is a beautiful, cut and polished ammonite (Cleoniceras) fossil from Madagascar. These ammonites are Cretaceous in age, approximately 110 million years old.

This specimen exhibits gorgeous mineralization within the chambers, each separated by white calcite septa (divisions). This highly polished, exotic ammonite makes a superb display piece with tremendous historical appeal

Ammonites were predatory cephalopod mollusks that resembled squids with spiral shells. They are more closely related to living octopuses, though their shells resemble that of nautilus species. True ammonites appeared in the fossil record about 240 million years ago during the Triassic Period. The last lineages disappeared 65 million years ago at the end of the Cretaceous.