Oligosphaeridium diastema
From dinoflaj2
"diastema" Singh, 1971, p.337, pl.55, figs.4-5; pl.56, figs.1-2. Holotype: Singh, 1971, pl.55, fig.4. Taxonomic senior synonym: Oligosphaeridium totum, according to Harker and Sarjeant (1975, p.226) and Brideaux and McIntyre (1975, p.29). Fauconnier and Cornu in Fauconnier and Masure (2004, p.403) listed this as a problematic species but apparently accepted the synonymy cited above. N.I.A. Age: Late Albian.
Parent: Oligosphaeridium
