Imperium naturæ C. Linnaeus, 1758 - nature
   Mundus Plinius - physical world
     naturalia - natural bodies
       Regnum Animale C. Linnaeus, 1758 - animal kingdom see Kingdom Animalia Linnaeus, 1758
         Class Amphibia Linnaeus, 1758 - amphibians see Class Amphibia Gray, 1825
           Order Reptiles Linnaeus, 1758 see Class Reptilia Linnaeus, 1758
             Genus Testudo Linnaeus, 1758
               01 Testudo mydas Linnaeus, 1758 see Chelonia mydas (Linnaeus, 1758)
               02 Testudo caretta Linnaeus, 1758 see Caretta caretta (Linnaeus, 1758)
               03 Testudo orbicularis Linnaeus, 1758 see Emys orbicularis (Linnaeus, 1758)
               04 Testudo scabra Linnaeus, 1758
               05 Testudo lutaria Linnaeus, 1758
               06 Testudo graeca Linnaeus, 1758 - spur-thighed tortoise
               07 Testudo carolina Linnaeus, 1758 see Terrapene carolina (Linnaeus, 1758)
               08 Testudo carinata Linnaeus, 1758
               09 Testudo geometrica Linnaeus, 1758 see Psammobates geometricus (Linnaeus, 1758)
               10 Testudo pusilla Linnaeus, 1758
               11 Testudo serpentina Linnaeus, 1758 see Chelydra serpentina (Linnaeus, 1758)