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Spinidinium pilatum
From Fensome et al., 2019:
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.
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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.
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.
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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.