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Appendix A

Xanthidium palmatum

"Xanthidium palmatum" (White, 1842, p.39-40, pl.4, fig.12) Bronn, 1848, p.1375.

TYPE: Holotype: White, 1842, pl.4, fig.12.

HISTORY: Originally Xanthidium tubiferum var. palmatum (Appendix A), subsequently Xanthidium palmatum, thirdly Spiniferites palmatus, fourthly Cordosphaeridium palmatum, fifthly Hystrichosphaeridium recurvatum (combination illegitimate), sixthly Hystrichosphaeridium duplum (name illegitimate).

SYNONYM(S): 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.

COMMENTS: This is not an illegitimate combination. See Hystrichosphaeridium recurvatum for a full discussion.

AGE: Senonian.


Infraspecific taxa:


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