†SUBFAMILY MEGATREMATINAE HOLTHUIS, 1982

Adna Sowerby, 1823 (one species)

† Megatrema Sowerby, 1823 (Pliocene–Recent) (two species)

Memagreta Ross & Pitombo, 2002 (one species)

† Pyrgomina Baluk & Radwanski, 1967 (Pliocene– Recent) (six species)