Clistaxis Cossmann, 1895 accepted as Retusa T. Brown, 1827 (original description)
Cryptophtalmus Cossmann, 1895 accepted as Phanerophthalmus A. Adams, 1850 (original description)
Gilhertia Cossmann, 1895 † (original description)
Ovactaeonina Cossmann, 1895 † (original description)
Palaeohydatina Cossmann, 1895 † (original description)
Phanerophtalmus Cossmann, 1895 accepted as Phanerophthalmus A. Adams, 1850 (original description)
Pseudonerinaea Cossmann, 1895 † accepted as Pseudonerinea Loriol, 1890 † (original description)
Ptychocylindrites Cossmann, 1895 † (original description)
Rhytidopilus Cossmann, 1895 † (original description)
Sulcoactaeon Cossmann, 1895 † (original description)
Volvocylindrites Cossmann, 1895 † (original description)