Arctospirifer Stainbrook, 1950 † (original description)
Eleutherokomma Crickmay, 1950 † (original description)
Knechtelia Lochman, 1950 † (original description)
Liraspirifer Stainbrook, 1950 † accepted as Cyrtospirifer Fredericks, 1924 † (original description)
Munsterella Scherill, 1950 † (original description)
Pluralicyathus Okulitch, 1950 † (original description)
Productellana Stainbrook, 1950 † (original description)
Triginglymus Blake, 1950 † (original description)
Vacuocyathus Okulitch, 1950 † (original description)
Voltzia Schevill, 1950 † accepted as Trachyteuthis Meyer, 1846 † (original description)
Wilbernicyathus Wilson, 1950 † (original description)