Palaeotetradinium silicorum

*silicorum Deflandre, 1936b, p.189, pl.9, fig.11.  Emendation: Deflandre and Sarjeant, 1970, p.4.  Holotype: Deflandre, 1936b, pl.9, fig.11; Deflandre and Sarjeant, 1970, pl.1, figs.7–8.  This name was not validly published in Deflandre (1934, caption to fig.6 — p.967; 1935, p.231) since no description was provided.  N.I.A.  Age: ?Senonian.

Parent: Palaeotetradinium