Baltisphaeridium reticuloidum, Jiabo, 1978, p.115–116, pl.31, figs.18–19.

NOW Kallosphaeridium?. Originally Baltisphaeridium, subsequently Filisphaeridium, thirdly (and now) Kallosphaeridium?.

Holotype: Jiabo, 1978, pl.31, fig.19.
Age: late Oligocene.