• Hexasphaera H. Keupp, 1987 † accepted as Keuppisphaera J.K. Lentin & G.L. Williams, 1989 † [Family: Thoracosphaeraceae]
• Hexasphaera Hull, 1997 † accepted as Levileugeo Yang & Yang, 1990 † [Family: Parvivaccidae]
• Hexasphaera R.F.A. Clarke & J.P. Verdier, 1967 † accepted as Callaiosphaeridium R.J. Davey & G.L. Williams, 1966 † [Family: Gonyaulacaceae]
• Hexasphaera asymmetrica (Deflandre & Courteville) Clarke & Verdier †
• Hexasphaerae H. Keupp, 1987 † (unaccepted)