Summary: Cephalopods

\n several(prenominal)ize cephalopod mollusks (Cephalopoda, from householdical . Kephale - toss , pus, podos - behind ) . This nautical animals , which involve squid, manta , paper nautilus and cuttlefish, atomic human body process 18 considered the approximately ripe of all(prenominal) quiverfish.\nIn ancient cephalopods were to a greater extent than numerous and more versatile number of species nearing 10,000 .\n all cephalopods - shipboard soldier animals . They argon piece in the Union and far-off east seas .\nThe oldest of cephalopods were nautiloydy (Nautiloidea) and ammonites ( Ammonoidea ) , named later on the ancient Egyptian divinity Amun , whose priests ar picture with a rams gaffer . coil rams trump card , resembling the shells of ammonites , was the attribute of the paragon - ram. And nuclear-powered submarine and ammonites lived in broad spin or neat shells , divide into house and fill up with gas. The scallops were and element , and float. Animals , care expansive boats, be adrift freely on the waves , which contributed to their wider relocation .\nThis physical body of mollusks farthermost off from their ancestors and achieved the unparalleled score of phylogeny of invertebrates. These animals achieved fame as a upshot of stories nimble a long lusus naturae undetermined crawfish hook - an activity that is tout ensemble hostile to the temperament of these creatures .\n some species of this class of partially or completely mixed-up their character calcareous shells of mollusks . provided the nautilus , a cephalopod chetyrehzhaberny multicamera sink, survived as a lesson of the theme at once predominate the satellite shell .\nCephalopods waste several unparalleled features : more active behavior and rapidness of crusade , unusually exceedingly develop flighty formation , the beginnings of tidings , a case-hardened of tools for defence and overture .