[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Animalia Linnaeus, 1758 - animals
     Branch Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
       Division Bilateria Hatschek, 1888 see Subkingdom Bilateria Hatschek, 1888
         Subdivision Deuterostomia Grobben, 1908 see Infrakingdom Deuterostomia Grobben, 1908
           Phylum Chordata Bateson, 1885 - chordates
             Subphylum Vertebrata Cuvier, 1812 - vertebrates
               Superclass Pisces Linnaeus, 1758 - fishes
                 Class Osteichthyes Huxley, 1880 - bony fishes see [unranked] Euteleostomi
                   Subclass Sarcopterygii Romer, 1955 see Clade Sarcopterygii Romer, 1955
                     Order Dipnoi Müller, 1844 - lungfishes
                       Family Lepidosirenidae Stirton, 1953 - South American lungfishes
                         Genus Protopterus Owen, 1837
                           1 Protopterus annectens (Owen, 1839)