A stunning, hand polished, well preserved, matrix free example of this rarely seen Lower Lias, Lower Jurassic ammonite from a famous British location; Conesby Quarry, Scunthorpe, North Lincolnshire, England.
Ammoniteswere 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. Ammonites appeared in the fossil record about 240 million years. The last lineages disappeared 65 million years ago at the end of the Cretaceous.