Trinovantedinium concretum

"concretum" Reid, 1977, p.438–439, pl.1, figs.9–11.  Holotype: Reid, 1977, pl.1, figs.9–11; Fensome et al., 1993a, figs.1–3 — p.1069.  NOW Quinquecuspis.  Originally Trinovantedinium, subsequently (and now) Quinquecuspis, thirdly Lejeunecysta.  Motile equivalent: Protoperidinium leonis (Pavillard, 1916) Balech, 1974, according to Harland (1981, p.68) and Lewis et al. (1984, p.30).  Age: Holocene.

Parent: Trinovantedinium