9.7" Large, Cut & Polished Ammonite Fossil - Madagasar

This is a 9.7" wide, cut and polished ammonite (Cleoniceras) fossil from Madagascar. It exhibits gorgeous mineralization within the chambers, each separated by white calcite septa (divisions). Some of the chambers are still hollow and lined with yellow-orange calcite crystals, and the preserved shell on the outside exhibits some purple iridescence. Getting fossils of Cleoniceras this large is quite unusual.

Comes with a pair of 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. True ammonites appeared in the fossil record about 240 million years ago. The last lineages disappeared 65 million years ago at the end of the Cretaceous.

What an ammonite would have looked like while alive.
What an ammonite would have looked like while alive.
Cleoniceras sp.
Ambatolafia, Mahajanga Province, Madagascar
9.7" wide (each half)
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