Agatized 4.4 Inch Polished Ammonite (Half)

Agatized Inch Polished Ammonite (Half) #1290

This is an absolutely gorgeous (half) ammonite fossil which is Middle Cretaceous (110 MYA) from Madagascar. It is of the species Cleoniceras and has been cut in half and highly polished to reveal the spectacular inner chamber detail. The inner chambers have been agatized and some of them are preserved as crystal lined pockets. It is truly a spectacular piece of "natural art". These fossils come with an acrylic display stand and is approximately 4.4 inches wide.

Ammonites were predatory mollusks that resembled squids with shells. These cephalopods had eyes, tentacles, and spiral shells. Though their shells resemble that of a nautilus, they are actually more closely related to living octopuses. Ammonites appeared in the fossil record about 240 million years ago, barely surviving several major extinction events. The last lineages disappeared 65 million years ago at the end of the Cretaceous.

Artist's reconstruction of an ammonite, by Nobu Tamura

More about ammonites