1.9" Jurassic Fossil Ammonite (Phylloceras)

Jurassic Fossil Ammonite (Phylloceras) #189519

This is a 1.9" fossil ammonite (Phylloceras baconicum) from the Lower Jurassic (Toarcian). This came out of an old collection with full location information but based on research we believe it might be from Italy. The outer-most shell weathered away, revealing the intricate details of the ammonites's sutures.

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