Fossil fanatic? We have quite an extensive variety of fossils available including these ammonites! What is an ammonite you ask? It is an extinct group of marine mollusc animals in the subclass Ammonoidea, of the class Cephalopoda. These molluscs are more closely related to living coleoids (i.e. octopuses, squid and cuttlefish) and the earliest ammonites appeared during the Devonian, and the last species died out during the Cretaceous-Paleogene extinction event. #crystalworld #crystalworldaustral