Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Clade neomura Cavalier-Smith, 1987
             Domain Eukaryota Chatton, 1925 - eukaryotes
               Clade discaria Cavalier-Smith, 2021
                 Clade dorsates Cavalier-Smith, 2021
                   Clade podiates Cavalier-Smith, 2012
                     Clade Amorphea Adl et al. 2012 [Simpson, Medina & Adl 2020]
                       Clade Obazoa Brown, Sharpe, Silberman, Heiss, Lang, Simpson & Roger 2013
                         Clade Opisthokonta Cavalier-Smith 1987 [Simpson & Medina 2020] - animal-fungal clade
                           Superkingdom Holozoa Lang, O'Kelly, Nerad, Gray & Burger, 2002
                             Clade filozoa Shalchian-Tabrizi, Minge, Espelund, Orr, Ruden, Jakobsen & Cavalier-Smith, 2008
                               Kingdom Animalia Linnaeus, 1758 - animals
                                 Clade Planulozoa Wallberg, Thollesson, Farris & Jondelius 2004
                                   Subkingdom Bilateria Hatschek, 1888 - bilaterians
                                     Clade Nephrozoa Jondelius, Ruiz-Trillo, Baguñà & Riutort 2002
                                       Infrakingdom Deuterostomia Grobben, 1908
                                         Phylum Chordata Bateson, 1885 - chordates
                                           Subphylum Craniata auct.
                                             Infraphylum Vertebrata Lamarck, 1801 - vertebrates
                                               Clade Pan-Gnathostomata Downs 2020
                                                 Superclass Gnathostomataᵀ Gegenbaur, 1874 - jawed vertebrates
                                                   [crown] Clade Eugnathostomata
                                                     [crown] Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
                                                       Subclass Euselachii Hay, 1902 - sharks, rays, and related fossils
                                                         Infraclass Elasmobranchii Bonaparte, 1838
                                                           Division Selachii - sharks
                                                             Superorder Squalomorphi
                                                               Series Squatinida
                                                                 Order Squatiniformes Buen, 1926 - angel sharks
                                                                   Family Squatinidaeᵀ Blainville, 1816 [monotypic] - angel sharks
                                                                     Genus Squatinaᵀ Duméril, 1805
                                                                       01 Squatina aculeata Duméril, 1829 - sawback angelshark
                                                                       01.0 [Squatina fimbriata Müller & Henle, 1839] see Squatina aculeata Duméril, 1829
                                                                       02 Squatina africana Regan, 1908 - African angelshark
                                                                       03 Squatina albipunctata Last & White, 2008
                                                                       04 Squatina argentina (Marini, 1930) - Argentine angel shark
                                                                       05 Squatina armata (Philippi, 1887)
                                                                       06 Squatina australis Regan, 1906 - Australian angelfish
                                                                       07 Squatina caillieti Walsh et al., 2011
                                                                       08 Squatina californica Ayres, 1859 - angel shark
                                                                       09 Squatina dumeril LeSueur, 1818 - angel shark
                                                                       09.0 [Squatina dumerili LeSueur, 1818] see Squatina dumeril LeSueur, 1818
                                                                       10 Squatina formosa Shen & Ting, 1972 - Taiwan angelfish
                                                                       11 Squatina guggenheim Marini, 1936 - angular angel shark
                                                                       12 Squatina japonica Bleeker, 1858 - Japanese angelfish
                                                                       13 Squatina legnota Last & White, 2008
                                                                       14 Squatina nebulosa Regan, 1906 - angel ray
                                                                       15 Squatina occulta Vooren & Da Silva, 1991 - smoothback angel shark
                                                                       16 Squatina oculata Bonaparte, 1840 - monk fish
                                                                       17 Squatina pseudocellata Last & White, 2008
                                                                       18 Squatina punctata Marini, 1936
                                                                       19 Squatina squatinaᵀ (C. Linnaeus, 1758) - angel shark
                                                                       19.0 [Squatina angelus Gronow, 1854] see Squatina squatina (C. Linnaeus, 1758)
                                                                       19.0 [Squatina europaea Swainson, 1839] see Squatina squatina (C. Linnaeus, 1758)
                                                                       19.0 [Squatina laevis Cuvier, 1816] see Squatina squatina (C. Linnaeus, 1758)
                                                                       19.0 [Squatina lewis Couch, 1825] see Squatina squatina (C. Linnaeus, 1758)
                                                                       19.0 [Squatina vulgaris Risso, 1810] see Squatina squatina (C. Linnaeus, 1758)
                                                                       20 Squatina tergocellata McCulloch, 1914 - ornate angelshark
                                                                       21 Squatina tergocellatoides Chen, 1963 - ocellated angelshark