Lejeunecysta tricuspis (Wetzel, 1933a, p.166, pl.2, fig.14) Artzner and Dörhöfer, 1978, p.1381-1382. Emendation: Lejeune-Carpentier and Sarjeant, 1981, p.20, as Lejeunecysta tricuspis.

NOW Phelodinium. Originally Peridinium, subsequently Lejeunia (combination illegitimate), thirdly Astrocysta, fourthly Senegalinium, fifthly Lejeunecysta, sixthly (and now) Phelodinium.
Taxonomic junior synonym: Lejeunia (now Phelodinium) kozlowskii, according to Harker and Sarjeant (1975, p.223) - however, Lindgren (1984, p.181) retained Lejeunia (as Phelodinium) kozlowskii. According to Lejeune-Carpentier and Sarjeant (1981, p.20, pl.6, fig.5), this species represents an autocyst; therefore it should be retained in Lejeunecysta.

Holotype: Wetzel, 1933a, pl.2, fig.14; Lejeune-Carpentier, 1942, fig.21; Lejeune-Carpentier and Sarjeant, 1981, pl.6, fig.5.
Age: Senonian