[Neoselachii] Compagno, 1977 - modern sharks and rays see Cohort Neoselachii Compagno, 1977 Order Carcharhiniformes Compagno, 1973 - ground sharks Family Triakidae Gray, 1851 - houndsharks Genus Hemitriakis Herre, 1923 Hemitriakis leucoperiptera Herre, 1923 - whitefin topeshark