Biota | Animalia | Chordata | Vertebrata | Gnathostomata | Tetrapoda | Mammalia | Theria | Eutheria | Proboscidea
|  | Haeckel, 1874 |  | von Zittel, 1879 |  | Linnaeus, 1758 |  | Huxley, 1880 | Illiger, 1811