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

This is a 20.6 x 17.4" section of shale covered in pyrite replaced ammonite fossils from the Posidonia Shale of Germany. The largest ammonite is a 8.8" wide Harpoceras which is surrounded by over a dozen, smaller Dactylioceras ammonites.

The shale has been rectangularly cut and coated in a sealant to preserve the fossils. We can either provide a display stand with this piece or add a backing and wall hanger upon request.

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.
What an ammonite would have looked like while alive.
Harpoceras & Dactylioceras
Holzmaden, Germany
Posidonia Shale
Plate 20.6 x 17.4", Largest Ammonite 8.8"
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