Hystrichosphaeridium dictyophorum
From dinoflaj2
"dictyophorum" Cookson and Eisenack, 1958, p.44, pl.11, fig.14. Holotype: Cookson and Eisenack, 1958, pl.11, fig.14; Fensome et al., 1993a, fig.1 - p.1125. NOW Stiphrosphaeridium. Originally Hystrichosphaeridium, subsequently Oligosphaeridium, thirdly (and now) Stiphrosphaeridium. Age: Late Jurassic.
Parent: Hystrichosphaeridium