[Neoselachii] Compagno, 1977 - modern sharks and rays see Infraclass Elasmobranchii Bonaparte, 1838
   Order Carcharhiniformes Compagno, 1973 - ground sharks
     Family Scyliorhinidae Gill, 1862 - catsharks
       Genus Pentanchus Smith & Radcliffe, 1912 [monotypic]
         1 Pentanchus profundicolus Smith & Radcliffe, in Smith, 1912 - onefin catshark