Spinidinium ?pilatum (Stanley, 1965, p.222, pl.21, figs.12–16) Costa and Downie, 1979, p.43.
Holotype: Stanley, 1965, pl.21, figs.14–16.
Originally Wetzeliella, subsequently Wetzeliella?, thirdly (and now) Spinidinium?, fourthly Magallanesium.
Questionable assignment: Costa and Downie (1979, p.43). Sluijs et al. (2009, p.48) questionably retained this species in Spinidinium.
Age: Paleocene.

Original description: Stanley, 1965, p.222: Wetzeliella pilata
Outer cyst more or less pyriform to rhomboidal in dorso-ventral view; length 42-49 µm width about 30 µm. Hypotheca smaller than epitheca. Outer cyst membrane thin, moderately folded; membrane ornamented with rodlike elements that usually have a small ball-like expansion on the distal end (pila); length of spines 1.5 to 3 µm. Apical horn about 5 µm long. Left antapical horn approximately 9 µm long whereas the right antapical horn is usually not developed. Girdle on the order of 5 µm wide and more or less distinct; furrow and archeopyle indistinct.

Affinities:
Stanley, 1965, p.222: Wetzeliella pilata
Wetzeliella pilata, differs from W. rugosa, by having long sculpture elements that are expanded at their distal end.