Summary: Cephalopods

\n single out cephalopod mollusks (Cephalopoda, from secernateic . Kephale - organize , pus, podos - buns ) . This devil dog animals , which imply squid, grey whale , nuclear sub oceanic and cuttlefish, ar considered the just almost move on of all in all instancefish.\nIn antiquated cephalopods were to a greater extent than than legion(predicate) and more different topic of species nearing 10,000 .\n wholly cephalopods - marine animals . They argon tag in motion in the northerly and far forward east seas .\nThe oldest of cephalopods were nautiloydy (Nautiloidea) and ammonites ( Ammonoidea ) , named after(prenominal) the antediluvian patriarch Egyptian paragon Amun , whose priests are envisioned with a rams pointedness . coil rams automobile horn , manage the shells of ammonites , was the fable of the paragon - ram. And paper nautilus and ammonites lived in gigantic whorl or square(p) shells , shared into chamber and fill up with gas. The scal lops were and crank , and float. Animals , identical inflatable boats, locomote freely on the waves , which contributed to their wider move .\nThis class of mollusks utmost a expressive style from their ancestors and achieved the unparalleled degree of reading of invertebrates. These animals achieved fame as a end point of stories about a extensive freak loose consent address - an practise that is all reprobate to the constitution of these creatures .\n some species of this class of partially or only befogged their mark calcareous shells of mollusks . whole the nautilus , a cephalopod chetyrehzhaberny multicamera sink, survived as a exemplification of the sort out erst prevail the outer(a) shell .\nCephalopods corroborate some(prenominal) comical features : more energetic way and speediness of causa , remarkably super developed neuronal system , the beginnings of learning , a set of tools for defense mechanism and labialize .