KnowraNautilusLinked fromLinked fromThe 8 pages that link to Nautilus, each with the reason it gives.All 8Broader topic 3Compared with 5CephalopodBroader topic: Nautiluses preserve an external shell unlike most living cephalopods.NautiloidBroader topic: Its living species show the familiar nautiloid shell form.Evolution of molluscsBroader topic: It retains an external shell that recalls features of ancient shelled cephalopods.