Baltisphaeridium erectum, (Manum and Cookson, 1964), Clarke and Verdier, 1967.

Now Kiokansium?. Originally Hystrichosphaeridium, subsequently Baltisphaeridium, thirdly Cordosphaeridium?, fourthly Cleistosphaeridium?, fifthly (and now) Kiokansium?.

Holotype: Manum and Cookson, 1964, pl.3, figs.5-6
Age: Albian-Turonian