3.1" Ammonite (Eleganticeras) In Polished Concretion - England

Here is a 3.1" wide Eleganticeras elegantulum fossil from Whitby, England. These well preserved ammonites are Jurassic in age and are found in hard concretions that must be split open to reveal the fossil. Additional rock has been removed to expose the fossil and the surrounding concretion was polished on the exterior.

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.

Eleganticeras elegantulum
Sendsend, North Whitby, North Yorkshire, England
3.1" wide, Concretion 4.8" wide
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