From Fensome et al., 2019:

Wetzeliella (Rhombodinium) draco (Gocht, 1955) Alberti, 1961
Originally (and now) Rhombodinium, subsequently Wetzeliella subgenus Rhombodinium.

Now Rhombodinium. Originally (and now) Rhombodinium, subsequently Wetzeliella subgenus Rhombodinium.
Vozzhennikova, 1967, retained this species in Rhombodinium Gocht, 1955.
Holotype: Gocht, 1955, text-fig.1
Locus typicus: Northern Germany
Stratum typicum: middle Oligocene
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Translation Gocht, 1955: LPP
Original diagnosis: Gocht 1955, p. 85-87: Rhombodinium draco
Central body flattened, in outline approximately rhomboidal to kite-shaped, the margins are smooth and unindented. The apical horn pointed, or blunt; lateral horns strongly extended, at the distal end rounded or blunt, rectangular to the longitudinal axis or a little inclined to the apex. Antapical horns either fine pointed, or (mostly asymmetrical) fused to one appendage.
Dimensions: Range: Length: 124-150 µm; Width: 126-147 µm.
Additions (annotated): The membrane of shell and capsule is pale, soft, transpararent and smooth. The endophragm resembles in outline the periphragm, although it is rounded below the horns and does not or hardly rise in the horns. In all complete preserved specimens (one exception) a rounded-rectangular to trapezoidal archeopyle, which narrows towards the apex, is present in the epitheca, just below the apical horn.