Cleistosphaeridium patagonicum, Archangelsky, 1969

Stover and Evitt, 1978, considered this to be a problematical species of Cleistosphaeridium.

Holotype: Archangelsky, 1969, pl.3, figs.9-10
Locus typicus: Province of Santa Cruz, Argentina
Stratum typicum: Eocene

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Original description: [Archangelsky, 1969, p. 200]: (Translation: LPP):

Diagnosis:
Cyst body sphaerical to oval, membrane granulate. Processes of equal length, numerous, irregularly distributed, thin with broad bases, ending in round thickenings or anchor-like, occasionally furcate, straight or wavy. Opening large, ?apical.

Dimensions:
Holotype - 28x28 µm, processes 10 µm.
Range - length 25-31 µm, breadth 17-30 µm, processes 7-12 µm.