Cordosphaeridium palmatum

"palmatum" (White, 1842, p.39–40, pl.4, fig.12) de Coninck, 1965, p.32.  Holotype: White, 1842, pl.4, fig.12.  Originally Xanthidium tubiferum var. palmatum (Appendix A), 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 type.  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 combination.  For a full discussion, see Hystrichosphaeridium recurvatum.  Age: Senonian.

Parent: Cordosphaeridium