3.6" Androgynoceras Ammonite - Germany

This is a 3.6" fossil Ammonite (Androgynoceras) from Neidersachsen, Germany. This very nice specimen shows the outer shell of the ammonite as well as a cast of the inside of the shell. The base of the rock shows plant inclusions and the cast of another ammonite.

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. Ammonites appeared in the fossil record about 240 million years ago and they barely survived several major extinction events. The last lineages disappeared 65 million years ago at the end of the Cretaceous.

Androgynoceras sp.
Niedersachsen, Germany
Ammonite 3.6" Wide
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