[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Pisces
     Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
       Order Squatiniformes Buen, 1926 - angel sharks
         Family Squatinidae Bonaparte, 1838 - angel sharks
           Genus Squatina Duméril, 1806
             1 Squatina aculeata Duméril, 1829 - sawback angelshark
             2 Squatina oculata Bonaparte, 1840 - monk fish
             3 Squatina squatina (C. Linnaeus, 1758) - angel shark