• Pyrocystis Carpenter, 1891 † accepted as Pyrocystites Barrande, 1887 † [Family: Diploporita (awaiting allocation)]
• Pyrocystis J. Murray ex Haeckel, 1890 [Family: Pyrocystaceae]
• Pyrocystis Murray, 1876 accepted as Pyrocystis J. Murray ex Haeckel, 1890 [Family: Pyrocystaceae]
• Pyrocystis acuta Kofoid, 1907
• Pyrocystis apiculata F.J.R. Taylor, 1976
• Pyrocystis apiculatus F.J.R. Taylor
• Pyrocystis elegans Pavillard, 1931
• Pyrocystis ellipsoides (E.H.P.A. Haeckel) Lemmermann
• Pyrocystis fusiformis (Wyville-Thomson ex Haeckel) Blackman, 1902
• Pyrocystis gerbaultii Pavillard, 1935
• Pyrocystis hamulus Cleve, 1900
• Pyrocystis Jusiformis (Haeckel) Blackman
• Pyrocystis lanceolata Schröder, 1900
• Pyrocystis lunata (Schütt) Schütt
• Pyrocystis lunula (J. Schütt) J. Schütt, 1896
• Pyrocystis margalefii Léger, 1973
• Pyrocystis minima (Matzenauer) Schiller, 1937
• Pyrocystis murrayana (E.H.P.A. Haeckel) Lemmermann
• Pyrocystis noctiluca Murray ex Haeckel, 1890
• Pyrocystis obtusa Pavillard, 1931
• Pyrocystis pseudonoctiluca Wyville-Thompson, 1876 accepted as
• Pyrocystis rhomboides (Matzenauer) Schiller, 1937
• Pyrocystis robusta Kofoid, 1907