Beautiful, 3.65" Ammonite (Arnioceras) Fossil - England

This is a 3.65" wide, Lower Jurassic ammonite (Arnioceras sp.), collected from the Lower Lias stratigraphic layer in Dorset, England. There is one extremely well-preserved ammonite on the specimen which was expertly prepared from the hard limestone. A second, smaller, unidentified ammonite rests on the shell of the Arnioceras.

Comes with an acrylic 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.

What an ammonite would have looked like while alive.
What an ammonite would have looked like while alive.
Arnioceras sp.
Lyme Regis, Charmouth, Dorset, England
Lower Lias
Ammonite: 3.65" wide, Entire specimen: 7.2 x 5.3"
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