Kallosphaeridium helbyi subsp. psilatum
From dinoflaj3
subsp. psilatum (Burger, 1980a, p.71, pl.25, figs.5–11) Lentin and Williams, 1989, p.206. Holotype: Burger, 1980a, pl.25, fig.10. Originally Canningia? minor var. psilata, subsequently Canningia? minor subsp. psilata, thirdly Chytroeisphaeridia minor subsp. psilata, fourthly (and now) Kallosphaeridium? helbyi subsp. psilatum. Age: Aptian–Albian.
Parent: Kallosphaeridium helbyi