Diacanthum hollisteri
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*hollisteri Habib, 1972, p.376–377, pl.9, figs.1,3; pl.10, fig.1; text-fig.2. Emendation: Habib and Drugg, 1987, p.762, as Diacanthum hollisteri. Holotype: Habib, 1972, pl.9, fig.1; Fensome et al., 1995, fig.1 — p.1547. Originally (and now) Diacanthum, subsequently Occisucysta. Lentin and Williams (1981, p.80) retained this species in Diacanthum. Taxonomic senior synonym: Gonyaulacysta (as and now Occisucysta) evittii, according to Below (1982a, p.32–33) — however, Jan du Chêne et al. (1986b, p.122) and Habib and Drugg (1987, p.762–763) retained Diacanthum hollisteri. Age: ?Valanginian.