2.55" One Side Polished, Pyritized Fossil, Ammonite - Russia

This is a gorgeous pyritized ammonite of the genus Quenstedticeras. It was collected from a Middle Jurassic age deposit along the banks of the Volga River near Saratov, Russia. One side of the ammonite has been polished to a mirror-finish, revealing the pyrite replaced/lined chambers. The opposite side of the ammonite has been left rough to display the stunning iridescent shell.

There is some gap fill restoration along one edge of the specimen. This has been reflected in the price of the ammonite.

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.

Quenstedticeras sp.
Dubki Clay Quarry, Saratov, Russia
2.55" wide
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