Kingdom Animalia Linnaeus, 1758 - animals Phylum Craniata Linnaeus, 1758 see Subphylum Craniata auct. Pisces Class Elasmobranchii Bonaparte, 1838 see Infraclass Elasmobranchii Bonaparte, 1838 Order Rajiformes Berg, 1940 - skates Family Potamotrygonidae Garman, 1877 - neotropical stingrays