8.25" Cut & Polished Ammonite Fossil (Half) - Madagascar

Here is a beautiful, 8.25" wide, cut and polished ammonite (Cleoniceras) fossil from Madagascar. These ammonites are Cretaceous in age, approximately 110 million years old.

This specimen exhibits gorgeous mineralization within the chambers, each separated by white calcite septa (divisions). It has a few repaired cracks throughout. This highly polished, exotic ammonite makes a superb display piece with tremendous historical appeal.

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.
What an ammonite would have looked like while alive.

Cleoniceras sp.
Ambatolafia, Mahajanga Province, Madagascar
8.25" wide
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