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Downiesphaeridium bergmannii
Downiesphaeridium bergmannii (Archangelsky, 1969a, p.414-415, pl.2, figs.8,11) Quattrocchio and Sarjeant, 1996, p.119-120.
NOW Lingulodinium. Originally Cleistosphaeridium, subsequently Operculodinium, thirdly Downiesphaeridium, fourthly (and now) Lingulodinium.
Taxonomic junior synonyms: Solisphaeridium filamentosum (Appendix A) and Impletosphaeridium charrieri, both according to Quattrocchio and Sarjeant (2003, p.142).
Holotype: Archangelsky, 1969a, pl.2, fig.11.
Age: Eocene.
NOW Lingulodinium. Originally Cleistosphaeridium, subsequently Operculodinium, thirdly Downiesphaeridium, fourthly (and now) Lingulodinium.
Taxonomic junior synonyms: Solisphaeridium filamentosum (Appendix A) and Impletosphaeridium charrieri, both according to Quattrocchio and Sarjeant (2003, p.142).
Holotype: Archangelsky, 1969a, pl.2, fig.11.
Age: Eocene.