Prolixosphaeridium spissum

"?spissum" (McIntyre and Brideaux, 1980, p.20, pl.7, figs.1–9) Lentin and Williams, 1981, p.234.  Holotype: McIntyre and Brideaux, 1980, pl.7, figs.1–4.  NOW Prolixosphaeridiopsis (Appendix A).  Originally Cleistosphaeridium, subsequently Prolixosphaeridium?, thirdly (and now) Prolixosphaeridiopsis (Appendix A).  Questionable assignment: Lentin and Williams (1981, p.234).  Age: Valanginian.

Parent: Prolixosphaeridium