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Appendix A

Micrhystridium diploporum

"Micrhystridium diploporum" (Eisenack, 1951, p.190-191, pl.2, fig.6) Downie and Sarjeant, 1963, p.90.

TYPE: Holotype: Eisenack, 1951, pl.2, fig.6.

STATUS: Name not validly published: basionym not fully referenced.

HISTORY: NOW: Baltisphaeridium (Appendix A). Originally Hystrichosphaeridium, subsequently Micrhystridium, thirdly (and now) Baltisphaeridium (Appendix A).

AGE: Ordovician (erratic).


Infraspecific taxa:


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