Prolixosphaeridium elongatum Jain, 1977, p. 185

Taxonomic senior synonym (at specific and varietal ranks): Hystrichosphaeridium xanthiopyxides var. parvispinum (as and now Prolixosphaeridium parvispinum), according to Lentin and Williams (1985, p.294)

Holotype: Jain, 1977, pl.4, fig.48
Age: Early Albian