Animal Kingdom | ------------------- | | SUB-KINGDOM, Vertebrates Invertebrates (10 Sub-kingdom 5) or | Phylum: |------------------------------- | | | | Sauropsida Ichthyopsida | | | | --------- ----------- | | | | | CLASS: Mammalia Birds Reptiles Amphibia Fishes | ------------------------- | | SUB-CLASS: Placental Implacental | | | ------------------- | | | DIVISION: Monodelphia Didelphia Ornithodelphia | --------------------------------------- | | | | | ORDER: Quadrumana Rodentia Carnivora Ungulata Cætacea, etc. | ---------------------------------- | | | SECTION: Pinnigrada Plantigrada Digitigrada | | | (Seals, etc.) (Bears, etc.) | | -------------------------------------- | | | | | GENUS: Mustelidæ Viverridæ Hyaænidæ Canidæ Felidæ | | | (Weasels, etc.) (Civets, etc.) | | --------------------------------------- | | | | | | SPECIES: Lion Tiger Leopard Puma Lynx Cat, etc. | --------------------- | | | VARIETY: African Syrian Cave-lion (extinct) As there is not space enough to tabulate such a classification in full, I have developed at each step the most interesting groups: Vertebrates, Mammalia, Monodelphia Carnivora, Digitigrada, Felidæ, Lion. Most of the other groups in each grade are also subdivisible, though some of them contain far fewer sub-classes than others.