Visbysphaera Appendix A

VISBYSPHAERA Lister, 1970, p.98.  Emendations: Kiryanov, 1978, p.21; Le Hérissé, 1989, p.198-199.  Acritarch genus.  For synonymy see Fensome et al. (1990, p.529).  Type: Downie, 1963, pl.92, fig.4, as Baltisphaeridium dilatispinosum.