Impletosphaeridium charrieri
From dinoflaj3
"charrieri" Troncoso and Doubinger, 1980, p.102, pl.2, figs.7–8. Holotype: Troncoso and Doubinger, 1980, pl.2, fig.7. Originally Impletosphaeridium, subsequently Operculodinium. Taxonomic senior synonym: Cleistosphaeridium (now Lingulodinium) bergmannii, according to Quattrocchio and Sarjeant, 2003, p.142. Age: Maastrichtian–Danian.
Parent: Impletosphaeridium