Circulodinium pentagonum

pentagonum (He Chengquan, 1991, p.56, pl.9, figs.13–14) He Chengquan et al., 2009, p.272.  Holotype: He Chengquan, 1991, pl.9, fig.13.  Originally Canningia, subsequently (and now) Circulodinium.  Age: Late Cretaceous.

Parent: Circulodinium