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Appendix A

Baltisphaeridium stimuliferum

"Baltisphaeridium stimuliferum" (Deflandre, 1939a, p.192, pl.10, fig.10) Sarjeant, 1961a, p.100-101.

TYPE: Holotype: Deflandre, 1939a, pl.10, fig.10.

HISTORY: NOW: Micrhystridium (Appendix A). Originally Hystrichosphaeridium, subsequently Baltisphaeridium, thirdly Solisphaeridium (Appendix A), fourthly Filisphaeridium (combination not validly published, Appendix A), fifthly (and now) Micrhystridium (Appendix A).

AGE: Late Jurassic.


Infraspecific taxa:


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