Xanthidium tubiferum Appendix A

"tubiferum" Ehrenberg, 1838, pl.1, fig.16.  Emendation: Davey and Williams, 1966b, p.56-58, as Hystrichosphaeridium tubiferum.  Holotype: Ehrenberg, 1838, pl.1, fig.16.  NOW Hystrichosphaeridium tubiferum.  Originally Xanthidium tubiferum, subsequently Hystrichosphaera tubifera (combination not validly published), thirdly (and now) Hystrichosphaeridium tubiferum, fourthly Ovum hispidum subsp. tubiferum (combination not validly published; Appendix A).  Taxonomic junior synonym: Xanthidium (as Hystrichokolpoma) bulbosum, according to Stover and Evitt (1978, p.55) - however, Lentin and Williams (1989, p.134) retained Xanthidium (as Hystrichokolpoma) bulbosum.  Age: Late Cretaceous?.

Parent: Xanthidium