Stunning Ammonite With Crystal Chambers (Half)

Here is a stunning example of the ammonite Cleoniceras from Madagascar. It's been cut and polished to show the amazingly detailed inner chambers. These chambers have been beautifully mineralized and many of them contain deep crystal lined pockets. These chambers are separated by white calcite septa (divisions) The back side of the specimen is also polished and shows a lot of detailed ridges and "mother of pearl" shell material.

This ammonite is a great display piece and looks spectacular on the included stand.

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
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