Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
   Phylum Chordata Bateson, 1885 - chordates
     Subphylum Craniata auct.
       Vertebrata Lamarck, 1801 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
         Myopterygii Janvier, 1978 - myopterygians
           Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
             Grade Teleostomi Bonaparte, 1836 see Clade Pan-Osteichthyes Rowe 2004 [Moore & Near 2020]
               Euteleostomi - bony vertebrates see Clade Osteichthyes Huxley 1880 [Moore & Near 2020]
                 Class Actinopterygii Woodward, 1891 - ray-finned fishes see Clade Actinopterygii Woodward 1891 [Moore & Near 2020]
                   Subclass Neopterygii Regan, 1923
                     Division Teleostei Müller, 1845
                       Elopocephala Arratia, 1999 see Supercohort Teleocephala de Pinna, 1996
                         Clupeocephala Patterson & Rosen, 1977 see Cohort Clupeocephala Patterson & Rosen, 1977
                           Subdivision Euteleostei Greenwood et al., 1966 [monophyletic?] see Cohort Euteleostei Greenwood et al., 1966
                             Neoteleostei Nelson, 1969 - neoteleosts see Infracohort Neoteleostei Nelson, 1969
                               Eurypterygii Rosen, 1973 - eurypterygians see Infracohort Eurypterygia Rosen, 1973
                                 Ctenosquamata - ctenosquamates see Section Ctenosquamata Rosen, 1973
                                   Acanthomorpha Rosen, 1973 - spiny-rayed fishes see Subsection Acanthomorphata Rosen, 1973
                                     Euacanthomorpha Johnson & Patterson, 1993
                                       Holacanthopterygii Johnson & Patterson, 1993
                                         Superorder Acanthopterygii Rosen & Patterson, 1969 see Division Acanthopterygii Rosen & Patterson, 1969
                                           Series Percomorpha see Division Percomorphacea Wiley & Johnson, 2010
                                             Order Pleuronectiformes Bleeker, 1859, sedis mutabilis - flatfishes see Suborder Pleuronectoidei
                                               Suborder Pleuronectoidei
                                                 Superfamily Pleuronectoidea Rafinesque, 1815
                                                   Family Paralichthyidae Regan, 1910 [monophyletic?] - sand flounders
                                                     01 Genus Ancylopsetta Gill, 1864
                                                     02 Genus Cephalopsetta Dutt & Rao, 1965
                                                     03 Genus Citharichthys Bleeker, 1862
                                                     04 Genus Cyclopsetta Gill, 1889
                                                     05 Genus Etropus Jordan & Gilbert, 1882
                                                     06 Genus Gastropsetta Bean, 1895
                                                     07 Genus Hippoglossina Steindachner, 1876
                                                     08 Genus Lioglossina Gilbert, 1890 see Genus Hippoglossina Steindachner, 1876
                                                     09 Genus Paralichthys Girard, 1858 - flounder
                                                     10 Genus Pseudorhombus Bleeker, 1862
                                                     11 Genus Syacium Ranzani, 1842
                                                     12 Genus Tarphops Jordan & Thompson, 1914
                                                     13 Genus Tephrinectes Günther, 1862
                                                     14 Genus Thysanopsetta Günther, 1880
                                                     15 Genus Verecundum Jordan, 1891 see Genus Xystreurys Jordan & Gilbert, 1880
                                                     16 Genus Xystreurys Jordan & Gilbert, 1880