Hystrichosphaeridium echinatum

"?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