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Palaeosphaerium
From Williams et al., 2017:
[Palaeosphaerium, Gorka, 1965, p. 308
Type species: Palaeosphaerium infrequens, Gorka, 1965 (pl.2, figs.7a–b)]
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Original description: [Gorka, 1965]: (Translation: Stover and Evitt, 1978, p. 235):
Description:
Theca spherical-polyhedral, with imprecise tabulation and transverse furrow. It has neither a longitudinal furrow nor an apical horn. Very short spines on the sutures between the plates. Surface very finely reticulate.
[Palaeosphaerium, Gorka, 1965, p. 308
Type species: Palaeosphaerium infrequens, Gorka, 1965 (pl.2, figs.7a–b)]
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Original description: [Gorka, 1965]: (Translation: Stover and Evitt, 1978, p. 235):
Description:
Theca spherical-polyhedral, with imprecise tabulation and transverse furrow. It has neither a longitudinal furrow nor an apical horn. Very short spines on the sutures between the plates. Surface very finely reticulate.