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Appendix A

Baltisphaeridium pumile

"Baltisphaeridium pumile" (O. Wetzel, 1933b, p.44, pl.4, fig.24 ex Deflandre, 1937b, p.78) Downie and Sarjeant, 1963, p.92.

EMENDATION: Sarjeant, 1985b, p.162, as Diacrocanthidium pumile.

TYPE: Holotype: O. Wetzel, 1933b, pl.4, fig.24.

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

HISTORY: NOW: Diacrocanthidium? pumile (Appendix A). Originally Hystrichosphaera longispinosa forma pumilis (name not validly published), subsequently Hystrichosphaeridium pumile, thirdly Baltisphaeridium pumile (combination not validly published), fourthly Micrhystridium pumile (Appendix A), fifthly (and now) Diacrocanthidium? pumile (Appendix A).

AGE: Late Cretaceous (erratic).


Infraspecific taxa:


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