9.2" Plate Of Pyritized Ammonite Fossils - Posidonia Shale, Germany

Plate Of Pyritized Ammonite Fossils - Posidonia Shale, Germany #240199

This is a 9.2 x 7" section of shale covered in pyrite replaced ammonite fossils from the Posidonia Shale of Germany. The larger ammonite (Harpoceras) is a 5" wide.

The shale has been coated in a sealant to preserve the fossils. It comes with an acrylic display stand.

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.

What an ammonite would have looked like while alive.

More about ammonites