Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Sirenia Gill, 1872 - sea cows
       Family Dugongidae Gray, 1821 - dugong and sea cow
         Subfamily Dugonginae Gray, 1821
           Genus Dugong Lacépède, 1799 - dugong
             Dugong dugon (P.L.S. Müller, 1776) - dugong