[Neoselachii] Compagno, 1977 - modern sharks and rays see Infraclass Elasmobranchii Bonaparte, 1838
   Order Squaliformes Compagno, 1973 - dogfish sharks
     Family Squalidae Blainville, 1816 - dogfish sharks
       Genus Squalus Linnaeus, 1758 - spiny dogfishes
         1 Squalus acanthiasᵀ Linnaeus, 1758 - piked dogfish
         2 Squalus asper Merrett, 1973 - roughskin spiny dogfish see Cirrhigaleus asper (Merrett, 1973)
         3 Squalus blainvillei (Risso, 1826) - longnose spiny dogfish see Squalus blainville (Risso, 1826)
         4 Squalus cubensis Howell-Rivero, 1936 - Cuban dogfish
         5 Squalus japonicus Ishikawa, 1908 - Japanese spurdog
         6 Squalus megalops (Macleay, 1881) - shortnose spurdog
         7 Squalus melanurus Fourmanoir, 1979 - blacktailed spurdog
         8 Squalus mitsukurii Jordan & Snyder, 1903 - shortspine spurdog
         9 Squalus rancureli Fourmanoir & Rivaton, 1979 - Cyrano spurdog