[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 1 Somniosus microcephalusᵀ (Bloch & Schneider, 1801) - Greenland shark 2 Somniosus pacificus Bigelow & Schroeder, 1944 - Pacific sleeper shark 3 Somniosus rostratus (Risso, 1826) - little sleeper shark