Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Craniata Linnaeus, 1758 see Subphylum Vertebrata Cuvier, 1812
     Pisces
       Class Actinopterygii Woodward, 1891 - ray-finned fishes
         Order Pleuronectiformes Bleeker, 1859 - flatfishes
           01 Family Psettodidae - psettodids
           02 Family Citharidae
           03 Family Scophthalmidae
           04 Family Paralichthyidae
           05 Family Bothidae Norman, 1934 - lefteye flounders
           06 Family Achiropsettidae
           07 Family Pleuronectidae Rafinesque, 1815, nom. corr. - righteye flounders
           08 Family Samaridae
           09 Family Achiridae Rafinesque, 1815
           10 Family Soleidae Gilbert, 1905 - soles
           11 Family Cynoglossidae Jordan, 1963 - tonguefishes