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Hystrichosphaerina exilimura
Hystrichosphaerina? exilimura (Davey and Williams, 1966) Sarjeant, 1981, p.122
Originally Cordosphaeridium, subsequently Hystrichosphaerina?, thirdly Tityrosphaeridium?. Questionable assignment: Sarjeant (1981, p.122).
Taxonomic senior synonym: Cordosphaeridium fibrospinosum, according to Fensome et al. (2009, p.23).
Taxonomic junior synonym: Achomosphaera (subsequently Cordosphaeridium) valianta, according to Jain (1982, p.52).
Holotype: Davey and Williams, 1966, pl.11, fig.2; Bujak et al., 1980, pl.7, figs.4-5
Age: Early Eocene
Originally Cordosphaeridium, subsequently Hystrichosphaerina?, thirdly Tityrosphaeridium?. Questionable assignment: Sarjeant (1981, p.122).
Taxonomic senior synonym: Cordosphaeridium fibrospinosum, according to Fensome et al. (2009, p.23).
Taxonomic junior synonym: Achomosphaera (subsequently Cordosphaeridium) valianta, according to Jain (1982, p.52).
Holotype: Davey and Williams, 1966, pl.11, fig.2; Bujak et al., 1980, pl.7, figs.4-5
Age: Early Eocene