Buedingiisphaeridium brevispinosum, (Eisenack, 1931 ex Eisenack, 1938), Moreau-Benoit, 1974

Combination not validly published since Moreau-Benoit, 1974 did not fully reference the basionym.
Now Baltisphaeridium brevispinosum (an acritarch species). Originally Hystrichosphaeridium brevispinosum, subsequently (and now) Baltisphaeridium brevispinosum (an acritarch species), thirdly Buedingiisphaeridium brevispinosum (combination not validly published); see also Ovum hispidum ssp. brevispinosum (name not validly published).

Holotype: Eisenack, 1931, pl.5, fig.3; lost, according to Eisenack, 1959
Neotype: Eisenack, 1959, pl.15, fig.13; designated by Eisenack, 1959
Age: Silurian