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 Pisces Linnaeus, 1758 see Superclass Pisces Linnaeus, 1758
           Order Thoracici Linnaeus, 1758
             Genus Echeneis Linnaeus, 1758
               1 Echeneis remora Linnaeus, 1758 see Remora remora (C. Linnaeus, 1758)
               2 Echeneis neucrates Linnaeus, 1758 see Echeneis naucrates Linnaeus, 1758