6.4" Toarcian Ammonite (Pleydellia) Fossil Cluster - France

Toarcian Ammonite (Pleydellia) Fossil Cluster - France #152701

This is a cluster of fossil ammonites of the genus Pleydellia, collected from a location near St.-Quentin-Fallavier, France. They are Toarcian (Jurassic period) in age, or approximately 180 million years old. This specimen measures 6.4" long by 5.8" wide and 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.

More about ammonites