Dinogymnium sphaerocephalum subsp. laeve

"subsp. laeve" (Vozzhennikova, 1967, p.48, pl.1, fig.4; pl.2, fig.5) Lentin and Williams, 1973, p.50.  Emendation: Lentin and Vozzhennikova, 1990, p.26-27, as Alisogymnium laeve.  Holotype: Vozzhennikova, 1967, pl.2, fig.5; Lentin and Vozzhennikova, 1990, pl.2, fig.7a; lost according to Lentin and Vozzhennikova (1990, p.26).  Neotype: Harland, 1973, pl.85, figs.2-3 as Dinogymnium (originally Gymnodinium) longicorne; Lentin and Vozzhennikova, 1990, pl.2, fig.76; designated by Lentin and Vozzhennikova (1990, p.27).  NOW Alisogymnium laeve.  Originally Gymnodinium sphaerocephalum var. laeve (Appendix B), subsequently Dinogymnium sphaerocephalum subsp. laeve, thirdly (and now) Alisogymnium laeve.  Age: Senonian. Parent: Dinogymnium sphaerocephalum