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Ciliosphaeridium
From Fensome et al., 2019:
"Ciliosphaeridium", Grigorovich, 1971, p.94.
Taxonomic senior synonym: Impletosphaeridium, according to Stover and Evitt (1978, p.232–233).
Type: Grigorovich, 1971, pl.2, fig.1, as Ciliosphaeridium cingulatum.
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Original description: [Grigorovich, 1971]: (Translation: Fensome, 1991, p. 131):
Diagnosis:
Shell oval, compressed along the long axis. Wall two-layered. Outer wall with many short processes which are distributed randomly on the surface. The inner wall [?] is grainy. The transverse furrow is broad, dividing the theca equally.
"Ciliosphaeridium", Grigorovich, 1971, p.94.
Taxonomic senior synonym: Impletosphaeridium, according to Stover and Evitt (1978, p.232–233).
Type: Grigorovich, 1971, pl.2, fig.1, as Ciliosphaeridium cingulatum.
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Original description: [Grigorovich, 1971]: (Translation: Fensome, 1991, p. 131):
Diagnosis:
Shell oval, compressed along the long axis. Wall two-layered. Outer wall with many short processes which are distributed randomly on the surface. The inner wall [?] is grainy. The transverse furrow is broad, dividing the theca equally.