Hystrichosphaeridium echinatum
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"?echinatum" Menéndez, 1965, p.12–13, pl.2, fig.9. Emendation: Guerstein et al., 2008, p.79, as Lingulodinium echinatum. Holotype: Menéndez, 1965, pl.2, fig.9, lost according to Guerstein et al. (2008, p.79). Neotype: Guerstein et al., 2008, pl.1, figs.11–12, designated by Guerstein et al. (2008, p.79). NOW Lingulodinium. Originally Hystrichosphaeridium, subsequently Hystrichosphaeridium?, thirdly (and now) Lingulodinium. Questionable assignment: Stover and Evitt (1978, p.56) as a problematic species. Age: Late Cretaceous.
Parent: Hystrichosphaeridium