Kallosphaeridium retirugosum
From dinoflaj3
retirugosum (He Chengquan, 1991, p.56, pl.8, fig.11) He Chengquan et al., 2009, p.164. Holotype: He Chengquan, 1991, pl.8, fig.11. Originally Canningia; subsequently (and now) Kallosphaeridium. Age: Late Cretaceous.
Parent: Kallosphaeridium