2.7" Jurassic Ammonite (Pseudolioceras) Fossil - England

Jurassic Ammonite (Pseudolioceras) Fossil - England #279551

This is a British ammonite of the species Pseudolioceras lythense. These well preserved ammonites are Jurassic in age and are found in hard concretions that must be split open to reveal the fossil. The hard rock then has to be removed mechanically to further expose the fossil.

One edge of the nodule has been cut flat for presentation.

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