Ammonidium Appendix A

AMMONIDIUM Lister, 1970, p.48-49.  Emendations: Le Hérissé, 1989, p.80-81, as a revised diagnosis; Sarjeant and Vavrdova, 1997, p.15.  Acritarch genus.  Type: Downie, 1963, pl.92, fig.6, as Baltisphaeridium microcladum.

Species List:

"Ammonidium lewisii Appendix A"
Ammonidium microfurcatum Appendix A