Compositosphaeridium bulgaricum Erkmen and Sarjeant 1980
Tenua rioultii (Sarjeant 1968) Davey 1978
Anthosphaeridium convolvuloides Appendix A
Artemisiocysta cladodichotoma Appendix A
Baltisphaeridium longispinosum Appendix A
Cymatiosphaera radiata Wetzel 1933b Appendix A
Enigmadinium cylindrifloriferum Appendix A
Palaeohystrichosphaeridium wimanii Appendix A
Pterocystidiopsis stephaniana Appendix A
Truncatisphaeridium clevelandense Appendix A