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 Galeomorphi Compagno, 1973
                                                               Order Carcharhiniformes Compagno, 1973 - ground sharks
                                                                 Suborder Carcharhinoideiᵀ
                                                                   Family Pentanchidae Smith, 1912 - deepwater catsharks
                                                                     Genus Halaelurus Gill, 1862
                                                                       1 Halaelurus boesemani Springer & D'Aubrey, 1972 - speckled catshark
                                                                       2 Halaelurus buergeri (Müller & Henle, 1838) - blackspotted catshark
                                                                       3 Halaelurus lineatus Bass, D'Aubrey & Kistnasamy, 1975 - lined catshark
                                                                       4 Halaelurus maculosus White, Last, & Stevens, 2007
                                                                       5 Halaelurus natalensis (Regan, 1904) - tiger catshark
                                                                       6 Halaelurus quagga (Alcock, 1899) - quagga catshark
                                                                       7 Halaelurus sellus White, Last & Stevens, 2007