Deflandrea pilosa Davey, 1969

Now Alterbidinium. Originally Deflandrea, subsequently (and now) Alterbidinium. See also Alterbia (combination illegitimate).
Holotype: Davey, 1969, pl.3, figs.2,5
Locus typicus: Northern Natal, South Africa
Stratum typicum: Campanian-Maastrichtian

Original diagnosis: Davey, 1969, p.9
Fusiform test having a thin outer wall which bears minute hairs and granules. Apical horn stout, blunt or rounded distally; single antapical horn asymmetrically placed, conical. Inner body large, in contact with the outer wall except in the apical and antapical regions. Cingulum moderately well developed, almost circular, broken by a sulcus which extends to the apex. Archaeopyle intercalary, the operculum typically remaining in position.
Holotype: overall length 57 Ám, width 46 Ám, inner body 38x42 Ám. Range: overall length 55(58.4)61 Ám, width 38(42.0)45 Ám. Number of specimens measured, 10.

Original description: Davey, 1969, p.9
The minute hairs and granules are not densely arranged and are not aligned. The hairs are often stouter along the borders of the cingulum and may here be termed spines. The operculum is usually attached to the test along its antapical margin and thus remains in position. An interesting feature is that this species is scarcely stained by safranin.

Affinities:
Davey, 1969, p.10: The overall form and the nature of the ornamentation easily distinguish D. pilosa from all previously described species.