This Specimen has been sold.
4" Ammonite (Androgynoceras) Fossil In Concretion - England
This is a beautifully prepared, 4" wide ammonite (Androgynoceras lataecosta) fossil from Charmouth, England. It is perfectly preserved with no crushing in the middle of a large concretion. Comes with a 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.