Senoniasphaera jurassica
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jurassica (Gitmez and Sarjeant, 1972, p.240-241, pl.14, figs.5,8) Lentin and Williams, 1976, p.85. Emendation: Poulsen and Riding, 1992, p.28, as Senoniasphaera jurassica. Holotype: Gitmez and Sarjeant, 1972, pl.14, fig.5; Poulsen and Riding, 1992, text-figs.3C-D. Originally Hexagonifera, subsequently (and now) Senoniasphaera, thirdly Ambonosphaera. Lentin and Williams (1981, p.11) retained this species in Senoniasphaera. Taxonomic senior synonym: Meiourogonyaulax (now Lithodinia?) staffinensis, according to Williams et al. (1993, p.32) - however, elsewhere in the same publication, Williams et al. (1993, p.56) retained Hexagonifera (now Senoniasphaera) jurassica. Age: Kimmeridgian.
