"[Pisces]"
   Class Elasmobranchii Bonaparte, 1838 see Subclass Elasmobranchii Bonaparte, 1838
     Order Squaliformes Compagno, 1973 - dogfish sharks
       Family Dalatiidae Gray, 1851 - kitefin sharks
         1 Subfamily Etmopterinae Fowler, 1934 see Family Etmopteridae Fowler, 1934
         2 Subfamily Somniosinae Jordan, 1888 - sleeper sharks see Family Somniosidae Jordan, 1888
         3 Subfamily Oxynotinae Gill, 1872 see Family Oxynotidae Gill, 1872
         4 Subfamily Dalatiinae (Gray, 1851)