Fossil Jurassic Ammonite (Asteroceras) Cluster - Dorset, England

This is a beautifully preserved cluster of Asteroceras ammonite fossils from the Lyme Regis region of England. There are three complete ammonites spread out across the rock, the largest of which measures 2.85" wide. Parts of these ammonites were naturally replaced with calcite which fluoresces white, yellow, or green under short-wave UV light. A very cool association and an excellent display piece.

A display stand will accompany the specimen to assist with presentation. There are some spots of restoration on the two smallest ammonites.

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