[Scala naturae Aristoteles, nom. inval.]
   ["Animalia" nom. inval.] see Kingdom Animalia nom. inval.
     ["ánhaima" Aristoteles, nom. inval. - bloodless animals]
       [Class "malákia" Aristoteles, nom. inval. - cephalopod mollusks] see Class Cephalopoda Cuvier, 1795
         ["polypous" Homerus, nom. inval.] see Order Octopoda Leach, 1817
           ["teuthos" Aristoteles, nom. inval. - sagittal squid] see Todarodes sagittatus (Lamarck, 1798)