Megathyrididae Dall, 1870
Megathiris barroisi (Schulgin, 1884)
Megathiris capensis Jackson, 1952
Megathiris crenata
Megathiris detruncata (Gmelin, 1789)
Megathiris multicostata
Megathiris patelliformis
Megathiris subradiata
