Crenistriella Knight, 1945 † (original description)
Liljevallospira Knight, 1945 † (original description)
Oxydiscus Koken, 1889 † accepted as Tropidodiscus Meek & Worthen, 1866 † (source of synonymy)
Patellilabia Knight, 1945 † (original description)
Patellilabia tentoriolum Knight, 1945 † (original description)
Phragmosphaera Knight, 1945 † (original description)
Phragmosphaera miranda Knight, 1945 † accepted as Phragmosphaera lyra (J. Hall, 1859) † (original description)
Retispira Knight, 1945 † (original description)
Retispira bellireticulata Knight, 1945 † (original description)
Sinuitina Knight, 1945 † (original description)
Sphenosphaera Knight, 1945 † (original description)
Sphenosphaera similis (Ulrich & Scofield, 1897) † (new combination reference)