Hystrichosphaerina calatha

"calatha" (Sarjeant, 1961a, p.104, pl.14, fig.7; text-fig.7) Duxbury, 1980, p.126.  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.  NOW Polystephanephorus.  Originally Polystephanosphaera, subsequently (and now) Polystephanephorus, thirdly Hystrichosphaerina.  Age: early Oxfordian.

Parent: Hystrichosphaerina