Cordosphaeridium minimum
From dinoflaj3
"minimum" (Morgenroth, 1966a, p.24, pl.5, figs.6–7) Benedek, 1972, p.25–26. Holotype: Morgenroth, 1966a, pl.5, figs.6–7. Taxonomic senior synonym at specific rank: Hystrichosphaeridium (now Minisphaeridium) latirictum according to Fensome et al. (2009, p.44). Originally Cordosphaeridium inodes subsp. minimum, subsequently Cordosphaerdium minimum. Age: early Eocene.