Downiesphaeridium bergmannii
From dinoflaj2
"bergmannii" (Archangelsky, 1969a, p.414-415, pl.2, figs.8,11) Quattrocchio and Sarjeant, 1996, p.119-120. 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). Age: Eocene.
Parent: Downiesphaeridium
