This Specimen has been sold.
1.2 Inch Wide Cut/Polished Desmoceras Ammonite
Here is a small ammonite from Madagascar that has been cut and polished to reveal all of the detail of the inner chambers. It's a real cool fossil that would make a great gift or could even be used to make jewelry.
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.