3.3 Inch Cut & Polished Ammonite

This is a 110 million year old cut and polished ammonite fossil from Madagascar. The polishing allows for the inner chamber detail to easily be seen. It comes with a pair of acrylic display stands.

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