Fishes
   Class Elasmobranchii Bonaparte, 1838 see Infraclass Elasmobranchii Bonaparte, 1838
     Order Rajiformes Berg, 1940 - skates
       01 Family Rhinobatidae Bonaparte, 1835 - guitarfishes
       02 Family Rajidae Blainville, 1816 - hardnose skates
       03 Family Anacanthobatidae von Bonde & Swart, 1923 - legskates
       04 Family Plesiobatidae Nishida, 1990 - deepwater stingrays
       05 Family Hexatrygonidae Heemstra & Smith, 1980 - sixgill stingrays
       06 Family Dasyatidae Jordan & Gilbert, 1879 - whiptail stingrays
       07 Family Gymnuridae Fowler, 1934 - butterfly rays
       08 Family Myliobatidae Bonaparte, 1835 - eagle rays
       09 Family Urolophidae Müller & Henle, 1841 - round stingrays
       10 Family Potamotrygonidae Garman, 1877 - neotropical stingrays