Yolkinigymnium elongatum

elongatum (May, 1977, p.112,114, pl.2, figs.11-12) Lentin and Vozzhennikova, 1990, p.31.  Holotype: May, 1977, pl.2, figs.11-12; Lentin and Vozzhennikova, 1990, Appendix, A, fig.42.  Originally Dinogymnium, subsequently (and now) Yolkinigymnium.  Age: Late Campanian-Early Maastrichtian.

Parent: Yolkinigymnium