Wetzeliella minuscula
From dinoflaj3
"minuscula" Alberti, 1961, p.10–11, pl.1, fig.10; pl.12, fig.4. Holotype: Alberti, 1961, pl.1, fig.10. NOW Palaeotetradinium. Originally Wetzeliella subgenus Rhombodinium?, subsequently Rhombodinium?, thirdly Inversidinium, fourthly (and now) Palaeotetradinium. Taxonomic junior synonym: Inversidinium exilimurum, according to Stover and Evitt (1978, p.71). Age: early Eocene.
Parent: Wetzeliella