Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] 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
                     [crown] Clade Amorphea Adl et al. 2012 [Simpson, Medina & Adl 2020]
                       [crown] Clade Obazoa Brown, Sharpe, Silberman, Heiss, Lang, Simpson & Roger 2013
                         [crown] 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 Vertebrata Cuvier, 1812 - vertebrates
                                             Myopterygii - myopterygians
                                               Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
                                                 Grade Teleostomi Bonaparte, 1836
                                                   Euteleostomi - bony vertebrates
                                                     Class Actinopterygii Woodward, 1891 - ray-finned fishes
                                                       [crown] Actinopteri Cope, 1871
                                                         Subclass Neopterygii Regan, 1923
                                                           Infraclass Teleostei Müller, 1845
                                                             Supercohort Teleocephala de Pinna, 1996
                                                               Clupeocephala
                                                                 Cohort Otomorpha E.O. Wiley & G.D. Johnson, 2010
                                                                   Subcohort Ostariophysi Sagemehl, 1885
                                                                     Section Otophysa (Rosen & Greenwood, 1970)
                                                                       Cypriniphysi
                                                                         Superorder Characiphysae (Fink & Fink, 1981)
                                                                           Siluriphysi Fink & Fink, 1996
                                                                             Order Siluriformesᵀ Rafinesque, 1810 - catfishes
                                                                               Superfamily Bagroidea Bleeker, 1858
                                                                                 Family Pimelodidae Bonaparte, 1838 - long-whiskered catfishes
                                                                                   Genus Megalonema Eigenmann, 1912
                                                                                     Subgenus Megalonema (Eretmomegalonema) Lundberg & Dahdul, 2008
                                                                                       Megalonema xanthumᵀ Eigenmann, 1912