26" Wide Polished Ammonite & Nautilus Cluster - Madagascar

Here is a large polished ammonite cluster still embedded in the rock in which they were found. It is 26" x 11" x 8". There are three main ammonites the largest measuring 9.6" wide. On the end ammonites, the polishing has exposed the intricate suture pattern of the inner shell. Many other fossils including clams, gastropods and a nautilus can also be seen in the rock.

The ammonites are Cretaceous (Albian Stage) in age or approximately 110 million years old and are quarried in the Mahajanga Province of Madagascar.

Ammonites were predatory mollusks that resembled a squid with a shell. These cephalopods had eyes, tentacles, and spiral shells. They are more closely related to a living octopus, though the shells resemble that of a nautilus. True ammonites appeared in the fossil record about 240 million years ago. 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.
Ambatolafia, Mahajanga Province, Madagascar
26" Wide, 11" Tall, 8" Deep
We guarantee the authenticity of all of our
specimens. Read more about our
Authenticity Guarantee.