Pachysphaeridium Appendix A
From dinoflaj2
PACHYSPHAERIDIUM Burmann, 1970, 310-311. Acritarch genus. Type: Eisenack, 1959, pl.15, fig.2, as Baltisphaeridium longispinosum (now accommodated in Pachsphaeridium robustum - see Fensome et al., 1990, p.383).
