1.3" Iridescent Ammonite (Quenstedticeras) Fossil in Rock - Poland

Iridescent Ammonite (Quenstedticeras) Fossil in Rock - Poland #127849

This is an absolutely gorgeous, Quenstedticeras ammonite fossil in rock from Poland. These ammonites are Jurassic in age, or approximately 178 million years old. You can feel the weight during the internal pyritization of the fossil, and the shell has a beautiful iridescence to it. There are additional partial pyritized ammonites scattered throughout the rock.

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.

More about ammonites