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.

About Ammonites

Ammonites were ancient marine cephalopods, similar to today's squids and octopuses, but with a defining feature: their distinctive, tightly coiled spiral shells. These shells, resembling those of modern nautiluses, served as both a protective home and a buoyancy aid, allowing ammonites to navigate the prehistoric seas with ease. First emerging around 240 million years ago in the Triassic Period, ammonites thrived for over 175 million years, adapting through numerous forms and sizes. As predatory creatures, they likely fed on smaller marine organisms, using their tentacles to capture prey. However, their long reign came to an end 65 million years ago at the close of the Cretaceous, coinciding with the mass extinction event that also eliminated the dinosaurs.

What an ammonite would have looked like while alive.

More about ammonites