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Appendix A

Baltisphaeridium mariannae

"Baltisphaeridium mariannae" (Philippot, 1949, p.56-57; text-fig.2) Downie and Sarjeant, 1965, p.92.

TYPE: Holotype: Philippot, 1949, text-fig.2.

HISTORY: NOW: Achomosphaera. Originally Hystrichosphaeridium, subsequently Baltisphaeridium, thirdly (and now) Achomosphaera.

COMMENTS: This combination was not validly published in Downie and Sarjeant (1963, p.91), since these authors did not fully reference the basionym.

AGE: Late Cretaceous.


Infraspecific taxa:


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