Cleistosphaeridium mikirii

"mikirii" Mehrotra, 1981, p.14–15, pl.1, figs.2–5.  Holotype: Mehrotra, 1981, pl.1, fig.2.  Taxonomic senior synonym: Hystrichosphaeridium (as and now Lingulodinium) machaerophorum, according to Jain and Garg (1983, p.61).  Mehrotra and Sah (1982, p.129) also proposed this name.  Age: middle Eocene.

Parent: Cleistosphaeridium