Cleistosphaeridium nanus
From dinoflaj2
"?nanus" (Rozen, 1965, p.311, pl.2, figs.7-8; text-fig.21) Sarjeant, 1981, p.122. Holotype: Rozen, 1965, pl.2, figs.7-8. NOW Impletosphaeridium nanus. Originally Cordosphaeridium microtriainum var. nanus, subsequently Cordosphaeridium microtriainum subsp. nanus, thirdly Cleistosphaeridium? nanus, fourthly (and now) Impletosphaeridium nanus. Questionable assignment: Sarjeant (1981, p.122). N.I.A. Age: Late Eocene.
Parent: Cleistosphaeridium
