Ammonite (Top Side): This outstanding Ammonite Fossil, from Madagascar, dates back to the Cretaceous period, 110 Million Years Ago. Ammonites were predatory mollusks that resembled a squid with a shell. They had eyes, tentacles and spiral shells. The last lineages disappeared 65 Million Years Ago. This excellent specimen displays the distinctive "oak leaf" suture pattern on the "top side" and is a Show-Worthy example of this ancient cephalopod. The equally fascinating inner half of this Ammonite stands alone on Fossil Era III (Inner Circle).