[Neoselachii] Compagno, 1977 - modern sharks and rays see Cohort Neoselachii Compagno, 1977 Order Carcharhiniformes Compagno, 1973 - ground sharks Family Triakidae Gray, 1851 - houndsharks Genus Triakis Müller & Henle, 1838 Triakis acutipinna Kato, 1968 - sharpfin houndshark