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Appendix A

Baltisphaeridium spiculatum

Baltisphaeridium spiculatum (White, 1844, p.87, pl.9, fig.4) Downie and Sarjeant, 1965, p.96.

TYPE: Holotype: White, 1844, pl.9, fig.4.

HISTORY: Originally Xanthidium tubiferum var. spiculatum (Appendix A), subsequently Hystrichosphaeridium spiculatum, thirdly (and now) Baltisphaeridium spiculatum.

COMMENTS: This combination was not validly published in Downie and Sarjeant (1963, p.92), since these authors did not fully reference the basionym.

AGE: Late Cretaceous.


Infraspecific taxa:


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