Pinterest Contest Prize: 4.2 Inch Polished Ammonite

Pinterest Contest Prize: Inch Polished Ammonite #1062

Win This Ammonite!

To help celebrate #FossilFriday we are running a series of fossil giveaways on our various social media accounts (Facebook, Twitter, Google+ and Pinterest). This is the prize for today's Twitter contest that will run for 24 hours from noon (PST) on Friday.

To enter the contest all you have to do is go to our Pinterest Board, find the contest pin and repin it. After the contests ends in 24 hours we will randomly select a winner from those that repinned it and contact them within Pinterest. You can leave a comment on the original pin if you have any questions.

Be sure to follow us on Pinterest if you haven't yet, as we will be regularly running contests, special offers as well as providing updates on new listings.

Other #FossilFriday Contests

We're running similar contests on Facebook, Google+ and Twitter concurrently so check them out also.

Trilobite For Twitter

Megalodon Tooth For Facebook

Fossil Fish For Google+

Now About The Ammonite

Here is a 110 million year old ammonite fossil from Madagascar which has been sliced in half and polished. The chambers of the ammonite have been agatized and some of them are filled with pockets of calcite crystals.

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