Cordosphaeridium microtriainum var. microtriainum
From dinoflaj3
"var. microtriainum". Autonym. Holotype: Klumpp, 1953, pl.17, figs.6–7 and Sarjeant, 1981, pl.2, figs.1–2; text-fig.2. Now redundant.
Parent: Cordosphaeridium microtriainum