Adnatosphaeridium patulum
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"?patulum" Williams and Downie, 1966c, p.217–218, pl.24, figs.1–2; text-fig.58. Holotype: Williams and Downie, 1966c, pl.24, fig.2; text-fig.58. NOW Thalassiphora. Originally Adnatosphaeridium?, subsequently (and now) Thalassiphora. Questionable assignment: Williams and Downie (1966c, p.217). Taxonomic senior synonym: Thalassiphora pelagica, according to Benedek and Gocht (1981, p.59) — however, Lentin and Williams (1985, p.354) retained Thalassiphora patula. Taxonomic junior synonym: Subathua sahnii, according to Stover and Williams (1987, p.207) and Lentin and Williams (1989, p.354). Age: early Eocene.
Parent: Adnatosphaeridium