3.1" Ammonite (Eleganticeras) In Polished Concretion - England

Ammonite (Eleganticeras) In Polished Concretion - England #57902

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 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