Crystalized Ammonite Sliced Pair / Cretaceous / Madagascar/ Cleoniceras
Ships from Massachusetts!
Cretaceous - Albian Stage (110 MYA)
Ambatolafia, Mahajanga Province, Madagascar
Here is a gorgeous cut and polished Cleoniceras ammonite fossil quarried in the Mahajanga Province of Madagascar. It's Early Cretaceous (Albian Stage) in age, or approximately 110 million years old.
These fossils exhibit beautiful mineralization within the chambers, each separated by white calcite septa (divisions). Some of the chambers are preserved as crystal lined pockets. This highly polished, exotic ammonite makes a superb display piece with great historical appeal.
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.