This Specimen has been sold.
Pyrite Replaced Ammonite Fossil Pendant
This is an absolutely gorgeous ammonite fossil pendant from the Saratov Region of Russia. This ammonite is Middle Jurassic (Upper Callovian Stage) or approximately 161-164 million years old. You can feel the weight of the internal pyritization of the fossil, and the shell has a beautiful near-iridescence to it.
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.