Lagenadinium callovianum
From dinoflaj3
"*callovianum" Piel, 1985, p.108,110,112, pl.1, figs.1–9; pl.2, figs.1–8; pl.3, figs.1–5; text-figs.1a–d,2a–c,3 (part). Holotype: Piel, 1985, pl.1, figs.1–6; Fensome et al., 1993a, figs.1–3 — p.1011. NOW Stephanelytron. Originally Lagenadinium, subsequently (and now) Stephanelytron. Age: middle to late Callovian.
