2.75" Cretaceous Ammonite (Crioceratites) Fossil - France
This is a 2.75" fossil ammonite of the species Crioceratites duvali, collected from Drôme, France. It is Hauterivian (Cretaceous period) in age, or approximately 130 - 133 million years old. The rock has been worked away to expose this ammonite. There is a repaired crack through the esposed portion of this ammonite. The edge of the rock has been cut flat for presentation purposes.
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. The last lineages disappeared 65 million years ago at the end of the Cretaceous.
Arpavan, Drôme, France
2.75" wide ammonite in 4.7 x 2.8" rock