[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Animalia Linnaeus, 1758 - animals
     Phylum Chordata Bateson, 1885 - chordates
       1 Class Amphibia Gray, 1825
       2 Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
       3 Class Mammalia Linnaeus, 1758 - mammals
       4 Class Reptilia Linnaeus, 1758 - reptiles
       5 other Chordata ("Pisces", etc.)