12.2" Tall, Aesthetic Cluster Of Polished Ammonite Fossils

Tall, Aesthetic Cluster Of Polished Ammonite Fossils #117486

This is a very aesthetic cluster of 110 million year old ammonite and gastropod fossils from the Mahajanga Province of Madagascar. The entire piece measures 12.2" tall, 6.9" wide and weighs about 11 lbs. Several of the ammonite fossils appear to have been composited onto the rock, but it's a beautiful display piece. The center ammonite on the piece is 3.8" across and many of the ammonites display their distinctive suture patterns that lie underneath the shell.

Ammonites were predatory mollusks that resembled squids with shells. These cephalopods had eyes, tentacles, and spiral shells. Though their shells resemble that of a nautilus, they are actually more closely related to living octopuses. Ammonites appeared in the fossil record about 240 million years ago, barely surviving several major extinction events. The last lineages disappeared 65 million years ago at the end of the Cretaceous.

Artist's reconstruction of an ammonite, by Nobu Tamura

More about ammonites