Xanthidium tubiferum var. palmatum Appendix A
"var. palmatum" White, 1842, p.39–40, pl.4, fig.12. Holotype: White, 1842, pl.4, fig.12. Originally Xanthidium tubiferum var. palmatum, subsequently Xanthidium palmatum (Appendix A), thirdly Spiniferites palmatus, fourthly Cordosphaeridium palmatum, fifthly Hystrichosphaeridium palmatum (combination illegitimate), sixthly Hystrichosphaeridium duplum (name illegitimate). Nomenclatural senior synonym: Xanthidium tubiferum var. recurvatum (as Hystrichosphaeridium recurvatum), which has the same holotype. Nomenclatural junior synonyms: Xanthidium tubiferum var. palmaforme and Hystrichosphaeridium duplum, both of which have the same holotype as Hystrichosphaeridium palmatum. This is not an illegitimate name. For a full discussion, see Hystrichosphaeridium recurvatum. Age: Senonian.
Parent: Xanthidium tubiferum_Appendix A