Classification
Animalia [kingdom]Brachiopoda [phylum]
Articulata [class]
Terebratulida [order]
Terebratellidina [suborder]
Terebratellacea [superfamily]
Megathirididae [family]
Familia Megathirididae bevat de volgende taxa:
Argyrotheca [genus]
Gwynia [genus]