Baltisphaeridium hirsutoides forma asteroideum, (Maslov, 1956), Eisenack, 1959

Now Baltisphaeridium asteroideum (an acritarch species). Originally Hystrichosphaera asteroidea, subsequently Hystrichosphaeridium asteroideum, thirdly Baltisphaeridium hirsutoides forma asteroideum, fourthly (and now) Baltisphaeridium asteroideum (an acritarch species). Eisenack, 1959 lowered this taxon to the rank of forma as Baltisphaeridium hirsutoides forma asteroideum.

Holotype: Maslov, 1956, pl.86, fig.13
Age: Late Cretaceous