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 Nantes Linnaeus, 1758
             Genus Raja Linnaeus, 1758 - skates
               01 Raja torpedo Linnaeus, 1758 see Torpedo torpedo (C. Linnaeus, 1758)
               02 Raja batis Linnaeus, 1758 see Dipturus batis (C. Linnaeus, 1758)
               03 Raja oxyrinchus Linnaeus, 1758 see Dipturus oxyrinchus (C. Linnaeus, 1758)
               04 Raja miraletus Linnaeus, 1758 - brown ray
               05 Raja fullonica Linnaeus, 1758 see Leucoraja fullonica (Linnaeus, 1758)
               06 Raja aquila Linnaeus, 1758 see Myliobatis aquila (Linnaeus, 1758)
               07 Raja altavela Linnaeus, 1758 see Gymnura altavela (C. Linnaeus, 1758)
               08 Raja pastinaca Linnaeus, 1758 see Dasyatis pastinaca (C. Linnaeus, 1758)
               09 Raja clavata Linnaeus, 1758 - thornback skate
               10 Raja rhinobatos Linnaeus, 1758 see Rhinobatos rhinobatos (C. Linnaeus, 1758)