[Neoselachii] Compagno, 1977 - modern sharks and rays see Cohort Neoselachii Compagno, 1977 Order Carcharhiniformes Compagno, 1973 - ground sharks Family Hemigaleidae Hasse, 1879 - weasel sharks Genus Hemigaleus Bleeker, 1852 [monotypic] Hemigaleus microstoma Bleeker, 1852 - sicklefin weasel shark