Hystrichosphaeridium picorricum

"picorricum" (Cramer, 1964, p.303–304, pl.11, figs.1–3; text-fig.24) Andreeva, 1973, p.192.  Holotype: Cramer, 1964, pl.11, fig.2.  Combination not validly published: basionym not fully referenced.  Originally Micrhystridium (Appendix A), subsequently Multiplicisphaeridium (Appendix A), thirdly Hystrichosphaeridium (combination not validly published).  Taxonomic senior synonym: Baltisphaeridium (now Multiplicisphaeridium) cladum Downie, 1963, an acritarch species, according to Colbath (1979, p.20–21).  Age: Devonian (middle Siegenian–Emsian).

Parent: Hystrichosphaeridium