Baltisphaeridium bacifer, (Eisenack, 1934), Cramer and Diez, 1979

Combination not validly published since Cramer and Diez, 1979 did not fully reference the basionym.
Now Bacisphaeridium (an acritarch genus). Originally Bion, subsequently Hystrichosphaeridium, thirdly (and now) Bacisphaeridium (an acritarch genus), fourthly Baltisphaeridium (combination not validly published); see also Veryhachium (an acritarch genus; combination not validly published). Cramer and Diez, 1979 apparently did not intend to propose this as a new combination.

Holotype: Eisenack, 1934, pl.4, fig.20; lost, according to Eisenack, 1962
Neotype: Eisenack, 1962, pl.44, fig.3; designated by Eisenack, 1962
Age: Late Ordovician