Ammonitesare relateddespite theirsnail-like shapecloseto thesquid.Ammonitestook place since theDevonanddiedat the endof the Cretaceous period65 million years agoat the same timewith the dinosaursfrom.TheAmmonitesexisted350million years, andwere one of thespecies andformthe most diverse animalgroup of theEarth's history. Ammoniteshaveinsideachambersystemthat wasconnected by a connectingtube,theso-called.Siphon.Through thissiphontheAmmonitewaspumping airinto individual chambers.According to the principleof a submarine, theAmmoniteswereup anddive intothe situation in thesea.