Great Lower Jurassic Ammonite (Asteroceras) Display - England
This is a displayable piece with a pair of green-colored, Lower Jurassic Asteroceras ammonite fossils. The ammonites measure 4.35" and 2.7" wide and the base of the stone has been cut flat so that it displays nicely without a display stand.
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.