[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 Somniosus Lesueur, 1818 Somniosus pacificus Bigelow & Schroeder, 1944 - Pacific sleeper shark