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Appendix A

Baltisphaeridium asteroideum

Baltisphaeridium asteroideum (Maslov, 1956, p.262, pl.86, fig.13) Downie and Sarjeant, 1965, p.87.

TYPE: Holotype: Maslov, 1956, pl.86, fig.13.

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

COMMENTS: This combination was not validly published in Downie and Sarjeant (1963, p.87), since these authors did not fully reference the basionym.

AGE: Late Cretaceous.


Infraspecific taxa:


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