Oxynaspididae is a family of goose barnacles in the order Lepadiformes. The following genera are listed by the World Register of Marine Species: Archoxnyaspis...
Oxynaspis gracilis is a species of goose barnacle in the family Oxynaspididae, commonly known as the black coral barnacle because it is normally found...
several families within this grouping; Tetraclitidae, Lithotryidae, Oxynaspididae, Anelasmatidae, Acrothoracica, Dendrogastridae, Lauridae, Petrarcidae...