1.35" Jurassic Fossil Ammonite Cluster (Caloceras) - United Kingdom

Jurassic Fossil Ammonite Cluster (Caloceras) - United Kingdom #219986

This is a 1.35" wide association in rock of multiple ammonites (Caloceras cf. belcheri) collected from North Yorkshire in the United Kingdom. The specimen is free standing at 2.3" tall, and contains 2 well preserved ammonites and one partial ammonite.

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