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Appendix A

Baltisphaeridium lewisii

"Baltisphaeridium lewisii" (Deunff, 1954a, p.240, fig.3) Downie and Sarjeant, 1965, p.92.

TYPE: Holotype: Deunff, 1954a, fig.3.

HISTORY: NOW: Gorgonisphaeridium? (Appendix A). Originally Hystrichosphaeridium, subsequently Baltisphaeridium, thirdly Ammonidium (combination not validly published, Appendix A), fourthly Multiplicisphaeridium (Appendix A), fifthly (and now) Gorgonisphaeridium? (Appendix A).

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

AGE: Mid Devonian.


Infraspecific taxa:


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