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Appendix A

Xanthidium malleoferum

"Xanthidium malleoferum" White, 1842, p.37, pl.4, div.3, fig.7.

TYPE: Holotype: White, 1842, pl.4, div.3, fig.7; Sarjeant, 1991, fig.4.6.

HISTORY: NOW: Achomosphaera?. Originally Xanthidium, subsequently Baltisphaeridium (Appendix A), thirdly (and now ) Achomosphaera?, fourthly Hystrichosphaeridium (combination not validly published).

AGE: Late Cretaceous.


Infraspecific taxa:


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