This Specimen has been sold.
Bargain, 6.9" Cut & Polished Ammonite Fossil - Mud Filled
Here is an 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. The interior filled with mud during the fossilization process, hence the bargain price. It 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.