[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Pisces
     Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
       Order Carcharhiniformes Compagno, 1973 - ground sharks
         Family Scyliorhinidae Gill, 1862 - cat sharks
           Genus Apristurus Garman, 1913
             1 Apristurus aphyodes Nakaya & Stehmann, 1998
             2 Apristurus laurussonii (Saemundsson, 1922) - cat shark
             3 Apristurus manis (Springer, 1979) - ghost catshark
             4 Apristurus microps (Gilchrist, 1922) - smalleye catshark
             5 Apristurus nasutus de Buen, 1959 - largenose catshark