Fossil Ammonite (Promicroceras) Cluster on Limestone - Lyme Regis
This plate contains about 20 Promicroceras planicosta ammonite fossils, collected from Lyme Regis, England. They have been nicely prepared so that they display very well on the limestone. Comes with an acrylic/metal display stand to assist with presentation.
Ammonites were predatory mollusks that resembled a squid with a shell. These cephalopods had eyes, tentacles, and spiral shells. They are more closely related to a living octopus, though the shells resemble that of a nautilus. True ammonites appeared in the fossil record about 240 million years ago. The last lineages disappeared 65 million years ago at the end of the Cretaceous.