These Ammonite Fossils are as beautiful as they are rare. Ammonite pricing is not only based on size and quality, but also on availability and is therefore subject to changes solely dependant on market values. Most people don't realize that Ammonite (Mesozoic cephalopod), is a close relative to the squid. These ammonite fossils first appeared in the Devonian, and went extinct with the Dinosaurs toward the end of the Cretaceous Period (65 million years ago). This beautiful ammonite species belongs to the douvilleiceras Mammillatum and is found in Madagascar. The Ammonites are carefully polished to show the beautifully colored calcite that filled the rooms of the ammonite. The bonding patterns that gave strength to the structure of the shell are still clearly visible.
Remarkable about these ammonites is that the original shell structure is still visible. Not only the bonding patterns, but also the shape of the shell. Most ammonite species had a smoother shell. But this species was characterized by the irregular shape of the shell. It is an asset to any fossil collection.