Systema naturæ - nature
   Universum - universe see [unranked] Mundus Plinius
     naturalia - natural bodies
       Regnum Animale nom. inval. - animal kingdom see Kingdom Animalia Linnaeus, 1758
         Class Pisces nom. inval. - fishes see Class Pisces Linnaeus, 1758
           Order Chondropterygii nom. inval. see Order Nantes Linnaeus, 1758
             Genus Acipenser nom. inval. see Genus Acipenser Linnaeus, 1758
               Ichthyocolla nom. inval. see Huso nom. inval.