Alisogymnium sphaerocephalum

*sphaerocephalum (Vozzhennikova, 1967, p.48, pl.2, fig.7; pl.3, fig.1) Lentin and Vozzhennikova, 1990, p.25.  Emendation: Lentin and Vozzhennikova, 1990, p.25-26, as Alisogymnium sphaerocephalum.  Holotype: Vozzhennikova, 1967, pl.3, fig.1; Lentin and Vozzhennikova, 1990, pl.2, figs.6,11-12; text-fig.10; Appendix A, fig.30.  Originally Gymnodinium (Appendix B), subsequently Dinogymnium, thirdly (and now) Alisogymnium.  Taxonomic junior synonym: Dinogymnium (now Alisogymnium) assamicum, according to Jain (1977a, p.133-134) - however, Lentin and Vozzhennikova (1990, p.28) retained Dinogymnium (as Alisogymnium) assamicum.  Age: Senonian.

Parent: Alisogymnium