One fossil, split in half and polished to reveal the hidden labyrinth of crystal filled chambers that once housed a predatory mullusk. Neutral hues throughout; the varied structural detail of the scepta (chamber division walls) show the turmoil faced during the fossilization process. Display stands are included. Ammonites were predators 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.