Batiacasphaera circularis, (Cookson and Eisenack, 1971), Dörhöfer and Davies, 1980

Now Kallosphaeridium?. Originally Canningia, subsequently Canningia?, thirdly Batiacasphaera, fourthly (and now) Kallosphaeridium?. Lentin and Williams, 1981, questionably retained this species in Canningia Cookson and Eisenack, 1960.

Holotype: Cookson and Eisenack, 1971, pl.8, fig.6
Age: Albian-Cenomanian.