Xanthidium furcatum Appendix A

"furcatum" Ehrenberg, 1837b, pl.1, figs.12,14.  Holotype: not designated.  Originally Xanthidium furcatum, subsequently Hystrichosphaera furcata, thirdly Ovum hispidum subsp. furcatum (combination not validly published), fourthly Spiniferites furcatus (combination not validly published).  Taxonomic senior synonym: Xanthidium (now Spiniferites) ramosum, according to Davey and Williams (1966a, p.29–33).  Taxonomic junior synonym: Geodia? tripunctata (Appendix A), according to Sarjeant (1964a, p.175).  Age: Late Cretaceous.

Parent: Xanthidium_Appendix A