[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Pisces
     Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
       Order Rajiformes Berg, 1940 - skates
         1 Family Rhinobatidae Bonaparte, 1835 - guitarfishes
         2 Family Rajidae Blainville, 1816 - hardnose skates
         3 Family Dasyatidae Jordan & Gilbert, 1879 - whiptail stingrays
         4 Family Gymnuridae Fowler, 1934 - butterfly rays
         5 Family Myliobatidae Bonaparte, 1835 - eagle rays