Calcistheca cuadrangulata
From dinoflaj3
*cuadrangulata Trejo, 1983, p.10, pl.51, figs.1–2,4–7; pl.52, figs.1–5 (not all figures identified), pl.53, figs.1–3. Holotype: Trejo, 1983, pl.52, fig.4. Age: Late Cretaceous.
Parent: Calcistheca