[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 Saccopharyngiformes - sackpharynx fishes see Suborder Anguilloidei
         Family Monognathidae Trewavas, 1937 - onejaw gulpers
           Genus Monognathus Bertin, 1937
             Monognathus jesperseni Bertin, 1936