Petalodinium rhomboideum

rhomboideum (Alberti, 1961, p.10, pl.1, figs.1–5; pl.12, fig.9) Williams et al., 2015, p.308.  Holotype: Alberti, 1961, pl.1, fig.3; pl.12, fig.9.  Originally Wetzeliella subgenus Rhombodinium, subsequently Rhombodinium, thirdly Dracodinium, fourthly (and now) Petalodinium.  Age: late Eocene.

Parent: Petalodinium

Infrataxon List:

Petalodinium rhomboideum subsp. ovale
Petalodinium rhomboideum subsp. rhomboideum