"[Pisces]" 1 Class Myxini see Subclass Myxinoidea 2 Class Cephalaspidomorphi 3 Class Elasmobranchii Bonaparte, 1838 see Subclass Elasmobranchii Bonaparte, 1838 4 Class Holocephali see Superorder Holocephali Bonaparte, 1831 5 Class Actinopterygii Woodward, 1891 - ray-finned fishes 5.0 Class Osteichthyes Huxley, 1880 - bony fishes see [unranked] Euteleostomi 6 Class Sarcopterygii Romer, 1955 - lobe-finned fishes and tetrapods see Clade Sarcopterygii Romer, 1955