This Specimen has been sold.
1.65 Inch Iridescent Red Ammonite Fossil
Photos really don't do this fossil justice at all. When the light hits it from certain angles is shines with a brilliant red iridescent color. It's simply beautiful. The ammonite is 1.65 inches wide and from the Middle Cretaceous 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. Ammonites appeared in the fossil record about 240 million years ago and they barely survived several major extinction events. The last lineages disappeared 65 million years ago at the end of the Cretaceous.