Hystrichosphaeridium dictyostilum

"dictyostilum" Menéndez, 1965, p.11-12, pl.2, fig.6; pl.3, figs.18-22.  Emendation: Sarjeant, 1981, p.115, as Areosphaeridium dictyostilum.  Holotype: Menéndez, 1965, pl.2, fig.6; pl.3, figs.18-20.  NOW Enneadocysta?.  Originally Hystrichosphaeridium, subsequently Oligosphaeridium?, thirdly Areosphaeridium, fourthly (and now) Enneadocysta?.  Taxonomic senior synonym: Hystrichosphaeridium (as Areosphaeridium) diktyoplokum, according to Eaton (1971, p.359) - however, Sarjeant (1981, p.115) retained Hystrichosphaeridium (as Areosphaeridium, now Enneadocysta?) dictyostilum.  Taxonomic junior synonyms: Areosphaeridium (now Enneadocysta) arcuatum and Cordosphaeridium (as Areosphaeridium, now Cooksonidium) capricornum, both according to Sarjeant (1981, p.115-116) - however, Lentin and Williams (1985, p.26) retained Areosphaeridium (now Enneadocysta) arcuatum and Cordosphaeridium (as Areosphaeridium, now Cooksonidium) capricornum.  Age: Late Jurassic.

Parent: Hystrichosphaeridium