"[Pisces]"
   Class Elasmobranchii Bonaparte, 1838 see Subclass Elasmobranchii Bonaparte, 1838
     Order Rajiformes Berg, 1940 - skates
       Family Rhinobatidae Müller & Henle, 1838 - guitarfishes
         1 Subfamily Rhinobatinae
         2 Subfamily Rhynchobatinae
         3 Subfamily Rhininae
         4 Subfamily Platyrhininae - thornbacks see Family Platyrhinidae Jordan, 1923