Operculodinium bergmannii
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"bergmannii" (Archangelsky, 1969a, p.414-415, pl.2, figs.8,11) Stover and Evitt, 1978, p.178. Holotype: Archangelsky, 1969a, pl.2, fig.11. 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). Masure in Fauconnier and Masure (2004, p.197) proposed the retention of this species in Operculodinium but were not aware of the work of Quattrocchio and Sarjeant (2003). Age: Eocene.
Parent: Operculodinium
