Hystrichosphaeridium cylindratum Brideaux 1971

"cylindratum" Brideaux, 1971, p.91–92, pl.26, figs.69–70; pl.27, fig.74; text-fig.9c.  Holotype: Brideaux, 1971, pl.26, figs.69–70; text-fig.9c.  Name illegitimate — senior homonym: Hystrichosphaeridium cylindratum Morgenroth, 1966a.  Substitute name: Hystrichosphaeridium brideauxii.  Originally Hystrichosphaeridium cylindratum (name illegitimate), subsequently Hystrichosphaeridium brideauxii.  Taxonomic senior synonym: Hystrichosphaeridium (now Florentinia) cooksoniae, according to Harker and Sarjeant (1975, p.225–226).  Age: Albian.

Parent: Hystrichosphaeridium