[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Pisces
     Class Osteichthyes Huxley, 1880 - bony fishes see [unranked] Euteleostomi
       Order Perciformes Rafinesque, 1810 - perches
         Family Xiphiidae Rafinesque, 1815 - swordfishes
           Genus Xiphias Linnaeus, 1758
             Xiphias gladius Linnaeus, 1758 - swordfish