[Neoselachii] Compagno, 1977 - modern sharks and rays see Cohort Neoselachii Compagno, 1977 Order Squaliformes Compagno, 1973 - dogfish sharks Family Squalidae Blainville, 1816 - dogfish sharks Genus Heteroscymnoides Fowler, 1934 [monotypic] 1 Heteroscymnoides marleyiᵀ Fowler, 1934 - longnose pygmy shark