Batherocystis Bassler, 1950 † (original description)
Billingsocystis Bassler, 1950 † (original description)
Columbocystis Bassler, 1950 † (original description)
Darlia Clarke, 1950 (original description)
Endothyranopsis Cummings, 1955 † (original description)
Eostrophonella Williams, 1950 † accepted as Strophonella Hall, 1879 † (original description)
Euchionodes Clarke, 1950 (original description)
Foerstecystis Bassler, 1950 † (original description)
Fourstonella R.H. Cummings, 1955 † (original description)
Glossostrophia Williams, 1950 † accepted as Leptodontella † (original description)
Gyalophylax Peters, 1950 (original description)
Hercostrophia Williams, 1950 † (original description)
Hoplistopsis James, 1950 (original description)
Kirkocystis Bassler, 1950 † accepted as Anatifopsis Barrande, 1872 † (original description)
Loeblichia Cummings, 1955 † (original description)
Mesodouvillina Williams, 1950 † accepted as Douvillina Oehlert in Fischer, 1887 † (original description)
Mesolissostrophia Williams, 1950 † (original description)
Mesopholidostrophia Williams, 1950 † accepted as Pholidostrophia Hall & Clarke, 1892 † (original description)
Myocheres Wilson, 1950 accepted as Leptinogaster Pelseneer, 1929 (original description)
Neotydeus Baker, 1950 accepted as Scolotydeus Berlese, 1910 (original description)
Notohermetia James, 1950 (original description)
Phenacophragma Applin, Loeblich & Tappan, 1950 † (original description)
Pseudethmia Clarke, 1950 (original description)
Regnellicystis Bassler, 1950 † (original description)
Schuchertocystis Bassler, 1950 † (original description)
Sigmactenus Traub, 1950 (original description)
Sinclairocystis Bassler, 1950 † (original description)
Solaenogona Hoffman, 1950 (original description)
Spartonoica Peters, 1950 (original description)
Springerocystis Bassler, 1950 † (original description)
Stacheoides R.H. Cummings, 1955 † (original description)
Stomatostoecha Applin, Loeblich & Tappan, 1950 † (original description)
Strimplecystis Bassler, 1950 † (original description)
Telaeoshaleria Williams, 1950 † accepted as Shaleria Caster, 1939 † (original description)
Ulrichocystis Bassler, 1950 † (original description)