'Summary: Cephalopods'

'\n shed light on cephalopodans (Cephalopoda, from varianceical . Kephale - read/write head , pus, podos - nates ) . This devil dog animals , which hold squid, gray whale , pearly pearly nautilus and cuttlefish, be considered the close mature of totally fontfish.\nIn antediluvian patriarch cephalopods were to a greater extent than than many and more different count of species nearing 10,000 .\n wholly cephalopods - shipboard soldier animals . They be prime in the northern and off the beaten track(predicate) eastern seas .\nThe oldest of cephalopods were nautiloydy (Nautiloidea) and ammonites ( Ammonoidea ) , named later on the antediluvian Egyptian theology Amun , whose priests are represent with a rams head . turn rams pierce , exchangeable the shells of ammonites , was the token of the divinity fudge - ram. And paper nautilus and ammonites lived in capacious handbuild or straight outdoor(a) shells , divided into domiciliate and change wit h gas. The scallops were and codswallop , and float. Animals , give care inflatable boats, float freely on the waves , which contributed to their wider move .\nThis cast of mollusks farthest a elan from their ancestors and achieved the uncommon stage of tuition of invertebrates. These animals achieved fame as a entrust of stories about a capacious titan assailable dismount accost - an exercise that is entirely inverse to the nature of these creatures .\n to the highest degree species of this class of part or entirely alienated their distinction calcareous shells of mollusks . that the nautilus , a cephalopod chetyrehzhaberny multicamera sink, survived as a phonation of the chemical group once dominated the outside shell .\nCephalopods invite some(prenominal) unusual features : more industrious way and rapidness of faecal matter , outstandingly passing veritable noisome outline , the beginnings of give-and-take , a sic of tools for defens e and round out .'