Leptodinium crassinervum

"?crassinervum" (Deflandre, 1939b, p.144, pl.6, fig.5 ex Sarjeant, 1967b, p.248-249) Sarjeant, 1969, p.12.  Emendation: Nøhr-Hansen, 1986, p.33, as Cribroperidinium crassinervum.  Holotype: Deflandre, 1939b, pl.6, fig.5; Jan du Chêne et al., 1986a, pl.70, figs.1-4.  NOW Cribroperidinium.  Originally Palaeoperidinium (name not validly published), subsequently Gonyaulacysta, thirdly Leptodinium, fourthly Leptodinium?, fifthly (and now) Cribroperidinium.  Questionable assignment: Stover and Evitt (1978, p.170) as a problematic species.  Age: Kimmeridgian.

Parent: Leptodinium