Peteinosphaeridium? sibiricum (Timofeev, 1966) Eisenack et al., 1979

Originally Hystrichosphaeridium, subsequently (and now) Peteinosphaeridium.
Eisenack et al., 1979 questionably included this species in Peteinosphaeridium. Holotype: Timofeev, 1966 pl.9, fig.3
Age: Late Ordovician