Ovum hispidum ssp. longispinosum Eisenack, 1931

Name not validly published since the specific name Ovum hispidum is not validly published.
Now Baltisphaeridium longispinosum (an acritarch species). Originally Ovum
hispidum ssp. Iongispinosum (name not validly published), subsequently Hystrichosphaera longispinosa, thirdly Hystrichosphaeridium longispinosum, fourthly (and now) Baltisphaeridium longispinosum (an acritarch species); see also Micrhystridium longispinosum (an acritarch species; combination not validly published).

Holotype: Eisenack, 1931, pl.5, fig.10; lost, according to Eisenack, 1959
Neotype: Eisenack, 1959, pl.15, fig.1; designated by Eisenack, 1959
Age: Ordovician (based on materlal from an erratic)