5.4" Thick, Cut & Polished Ammonite Fossil (Half) - Madagascar

Thick, Cut & Polished Ammonite Fossil (Half) - Madagascar #230106

Here is a 5.4" wide, cut and polished ammonite (Puzosia sp?) fossil from Madagascar. These ammonites are Cretaceous in age, approximately 110 million years old. This is one of the more uncommon genus found in the area and the ammonite is much thicker than the common Cleonoceras.

This pictured half of the ammonite is included along with an acrylic display stand.

Ammonites were predatory cephalopod mollusks that resembled squids with spiral shells. They are more closely related to living octopuses, though their shells resemble that of nautilus species. True ammonites appeared in the fossil record about 240 million years ago during the Triassic Period. The last lineages disappeared 65 million years ago at the end of the Cretaceous.

What an ammonite would have looked like while alive.

More about ammonites