Polystephanephorus calathus
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*calathus (Sarjeant, 1961a, p.104, pl.14, fig.7; text-fig.7) Sarjeant, 1961b, p.1096. Emendation: Stancliffe and Sarjeant, 1990, p.205, as Polystephanephorus calathus. Holotype: Sarjeant, 1961a, pl.14, fig.7; text-fig.7; Stancliffe and Sarjeant, 1990, pl.2, figs.1,4; text-fig.1. Originally Polystephanosphaera, subsequently (and now) Polystephanephorus, thirdly Hystrichosphaerina. Lentin and Williams (1981, p.232) retained this species in Polystephanephorus. Although Sarjeant (1961b, p.1096) did not fully reference the basionym when he proposed this combination, he was clearly using zoological nomenclature, which does not require basionym citations. Age: early Oxfordian.
