Chordata Bateson, 1885 - chordates Class Pisces Linnaeus, 1758 see Superclass Pisces Linnaeus, 1758 Subclass Actinopteri Cope, 1871 see [unranked] Actinopteri Cope, 1871 Order Isospondyli Cope, 1887 see Order Osteoglossiformes Berg, 1940 Suborder Scyphophori see Suborder Notopteroidei Family Mormyridae Bonaparte, 1831 - elephantfishes