Deflandrea stagonoides (Benedek, 1972) Lentin and Williams, 1976; Emendation: Benedek and Sarjeant, 1981, p.324, as Ascodinium stagonoides.

Now Senoniasphaera. Originally Ascodinium, subsequently Deflandrea, thirdly (and now) Senoniasphaera.

Holotype: Benedek, 1972, pl.2, fig.12; Benedek and Sarjeant, 1981, Fig.3, nos.1,3
Locus typicus: T÷nisberg, Lower Rhine Embayment, Germany
Stratum typicum: Late Oligocene
Translation Benedek, 1972: LPP

Original diagnosis: Benedek, 1972, p.10: Ascodinium stagonoides
An Ascodinium species with dorsoventrally flattened, thickwalled inner wall and smooth outer wall. Apex ends in a wide, long, rounded horn; antapical processes strongly developed and with rounded ends.

Original description: Benedek, 1972, p.11: Ascodinium stagonoides
The thickwalled inner layer is circular to ellipsoidal and connected to the outer layer dorsally and ventrally. The finger-like apical and antapical processes are nearly of same size. Archeopyle results from the loss of the apical part, leaving a zigzag suture. Membrane of the inner wall thick, possibly granular and of yellow-brown color. Outer Membrane relatively thin, pale yellow and transparent.
Dimensions: Capsule 62(65)70 Ám, apical horn 13-15 Ám, antapical horns 12-20 Ám (3 specimens).