Polysphaeridium cephalum

"cephalum" Kar, 1979, p.34, pl.4, figs.66a–b,67.  Holotype: Kar, 1979, p.34, pl.4, figs.66a–b,67.  Originally Polysphaeridium, subsequently Sumatradinium, thirdly Batiacasphaera?.  Taxonomic senior synonym: Operculodinium placitum, according to Jain and Garg (1991, p.81).  N.I.A.  Age: Oligocene.

Parent: Polysphaeridium