Tetratropis
From dinoflaj3
TETRATROPIS Willems, 1990, p.242–244. Calcareous dinoflagellate genus (see Streng et al., 2004, p.483 and Elbrächter et al., 2008, p.1302, the latter noting that the cyst wall is pithonelloid and so a dinoflagellate affinity is questionable). Emendations: Bison et al., 2004, p.127; Odin, 2009, p.185. Type: Willems, 1990, pl.1, figs.1a–d, as Tetratropis corbula.
Parent: Subfamily Calciodinelloideae
Species List: