Kleithriasphaeridium cooksoniae

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cooksoniae (Singh, 1971, p.329-330, pl.51, figs.7-8; pl.52, figs.1-4) Fensome et al., 2009, p.40.  Emendation: Duxbury, 1980, p.120, as Florentinia cooksoniae.  Holotype: Singh, 1971, pl.51, fig.7.  Originally Hystrichosphaeridium, subsequently Florentinia, thirdly Litosphaeridium, fourthly (and now) Kleithriasphaeridium.  Taxonomic senior synonym: Hystrichosphaeridium (as Florentinia) mantellii, according to Below (1982c, p.8) - however, Lentin and Williams (1985, p.135) retained Florentinia cooksoniae.  Taxonomic junior synonym: Hystrichosphaeridium cylindratum, according to Harker and Sarjeant (1975, p.225-226).  Age: Late Albian.

Parent: Kleithriasphaeridium