[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 Deania Jordan & Snyder, 1902 - longnose dogfish Deania profundorum (Smith & Radcliffe, 1912) - arrowhead dogfish