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Appendix A

Baltisphaeridium oligacanthum

"Baltisphaeridium oligacanthum" (W. Wetzel, 1952, p.402-405, pl.A, figs.4,7-8,11a-b; text-figs.21-25) Downie and Sarjeant, 1965, p.93.

EMENDATION: Wilson and Sarjeant in Sarjeant, 1984c, p.127-128, as Laticavodinium oligacanthum.

TYPE: Holotype: W. Wetzel, 1952, pl.A, fig.8; Sarjeant, 1984c, pl.2, figs.4-5; text-fig.2; Fensome et al., 1995, figs.1-5 - p.1625.

HISTORY: NOW: Impletosphaeridium?. Originally Hystrichosphaeridium, subsequently Baltisphaeridium, thirdly Cleistosphaeridium?, fourthly Laticavodinium, fifthly (and now) Impletosphaeridium?.

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

AGE: Danian.


Infraspecific taxa:


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DINOFLAJ (c) 1998