6.9" Polished Ammonite (Cleoniceras) - Madagascar

Polished Ammonite (Cleoniceras) - Madagascar #108242

This is a beautiful 6.9", polished Ammonite (Cleoniceras) cluster from Ambatalafia, Mahajanga Province, Madagascar. It contains two ammonites polished to a high gloss. On the large specimen near the smaller one, the sutures can be seen. The smaller shell is 1.9" and shows beautiful iridescence as well as the suture pattern this ammonite is famous for.

Comes with a stand.

Ammonites were predatory mollusks that resembled squids with shells. These cephalopods had eyes, tentacles, and spiral shells. Though their shells resemble that of a nautilus, they are actually more closely related to living octopuses. Ammonites appeared in the fossil record about 240 million years ago, barely surviving several major extinction events. The last lineages disappeared 65 million years ago at the end of the Cretaceous.

Artist's reconstruction of an ammonite, by Nobu Tamura

More about ammonites