From Fensome et al., 2019:
Deflandrea translucida Châteauneuf, 1980, p.138, pl.22, fig.9; pl.23, fig.6. Holotype: Châteauneuf, 1980, pl.22, fig.9. Age:
Eocene (Lutetian–Ludian).

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(Chateauneuf, 1980)
Origin of the name: from the thinness and transparent appearance of these cysts
Holotype: Chelles, Sables de Beauchamp, Auversien
Diagnosis: Peridinioid cyst with a more or less bulging oval lateral contour. Triangular apical horn, often truncated and flattened at the apex, asymmetrical and reduced antapical horns. Bicavate cysts. Endocoele well marked at the horn level but absent in the cingulate area. Endophragm often faint and translucent. Periphragm often pleated and smooth or very slightly granular. Parasutural features faint. The paratabulation is here marked only by the archaeopyle and the paracingulate area. Intercalated arechaeopyle type I/I, free operculum. Paracingulum fairly clear and very visible in optical section on the edges of the cyst. Parasulcus barely visible. Holotype dimensions: length: 55 µm, height: 60 µm (including horns) – endocoel: 55 µm/45 µm, archaeopyle: 20/10 µm, cyst size variations (10 specimens): 40 µm-55 µm/50-60 µm.
Note: This species does not resemble any of the tertiary forms known from the literature. It is characterized by its very rounded shape and by the thinness of the endo- and periphragm walls.
Statigraphy: Lutetian to Lower Lundian (common). It was found at the base of the Corbula Beds (L. Costa; oral communication)