[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Pisces
     Class Osteichthyes Huxley, 1880 - bony fishes and tetrapods see Clade Osteichthyes Huxley 1880 [Moore & Near 2020]
       Order Pleuronectiformes Bleeker, 1859 - flatfishes see Suborder Pleuronectoidei
         Family Cynoglossidae Jordan, 1888 - tonguefishes
           Genus Symphurus Rafinesque, 1810 - tonguefish
             Symphurus ligulatus (Cocco, 1844) - elongate tonguesole