1.7" Pyrite Replaced Ammonite (Peronoceras) Fossil - England

This is a beautiful ammonite of the species Peronoceras subarmatum. This well preserved ammonite is Jurassic in age and would have been found in a hard concretion that had to be split open. The hard rock then has to be removed mechanically to further expose the fossil.

There is a repaired crack through this ammonite. It comes with an acrylic display stand.

Ammonites were predatory cephalopod mollusks that resembled squids with spiral shells. They are more closely related to living octopuses, though their shells resemble that of nautilus species. True ammonites appeared in the fossil record about 240 million years ago during the Triassic Period. 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.
Peronoceras subarmatum
Yorkshire, England
2.9" wide
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