[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
         Family Rajidae Blainville, 1816 - skates
           Genus Malacoraja Stehmann, 1970
             1 Malacoraja kreffti (Stehmann, 1978) - Krefft's ray
             2 Malacoraja spinacidermis (Barnard, 1923) - roughskin skate