[Neoselachii] Compagno, 1977 - modern sharks and rays see Cohort Neoselachii Compagno, 1977
   Order Carcharhiniformes Compagno, 1973 - ground sharks
     Family Triakidae Gray, 1851 - houndsharks
       Genus Hypogaleus Smith, 1957 [monotypic]
         Hypogaleus hyugaensis (Miyosi, 1939) - blacktip tope