Beatiful 4 Inch Sliced Cleoniceras Ammonite

This is a true natural work of art, a Cleoniceras ammonite fossil from the Cretaceous (110 million years ago) of Madagascar. It has been cut in half and polished to reveal the inner chamber detail. These chambers have been highly mineralized with some of them being preserved as pockets of calcite crystals. The reverse side is also polished and displays some of the shell along with the distinctive suture pattern.

This ammonite is approximately 4.05 inches wide and comes with a pair of acrylic display stands.

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

Artists reconstruction of an ammonite.  By Nobu Tamura
Artists reconstruction of an ammonite. By Nobu Tamura
Ambatolafia, Mahajanga Province, Madagascar
We guarantee the authenticity of all of our
specimens. Read more about our
Authenticity Guarantee.