This Specimen has been sold.
Lot: 1.7 to 4.2" Perisphinctes Ammonite Fossils - 61 Pieces
This is a wholesale lot of Late Jurassic Perisphinctes ammonite fossils from Sakaraha, Madagascar. There are 61 pieces in the lot and the ammonites range from 1.7 to 4.2" wide. These ammonites are unpolished and unworked.
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.