Actinopterygii [43,282] Amphibia [3,472] Ascidiacea [803] Aves [14,907] Cephalaspidomorphi [301] Cephalochordata [249] Elasmobranchii [5,385] Holocephali [173] Mammalia [25,897] Myxini [91] Reptilia [2,364] Sarcopterygii [21] Thaliacea [3] unknown [244]