[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 Leucoraja Malm, 1877
             1 Leucoraja circularis (Couch, 1838) - cuckoo ray
             2 Leucoraja fullonica (Linnaeus, 1758) - shagreen skate
             3 Leucoraja melitensis (Clark, 1926) - Maltese ray
             4 Leucoraja naevus (Müller & Henle, 1841) - sandy ray