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Appendix A

Geodia irregularis

"Geodia? irregularis" Merrill, 1895, p.16; text-fig.4.

TYPE: Holotype: Merrill, 1895, text-fig.4.

HISTORY: Originally Geodia? irregularis, subsequently Hystrichosphaeridium irregulare (combination illegitimate), thirdly Hystrichosphaeridium? irregulare (combination illegitimate), fourthly Hystrichosphaeridium speciale. Questionable assignment: Merrill (1895, p.16).

SYNONYM(S): Taxonomic senior synonym (at specific rank): Xanthidium tubiferum var. complex (now Oligosphaeridium complex), according to Harker and Sarjeant in Harker et al. (1990, p.59).

AGE: Early Cretaceous.


Infraspecific taxa:


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DINOFLAJ (c) 1998