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Polysphaeridium fucosum

"Polysphaeridium? fucosum" (Valensi, 1955a, p.40; text-fig.2b) Davey and Williams, 1969, p.6.

TYPE: Holotype: Valensi, 1955a, text-fig.2b.

HISTORY: NOW: Dapsilidinium?. Originally Micrhystridium (Appendix A), subsequently Hystrichosphaeridium, thirdly Polysphaeridium?, fourthly (and now) Dapsilidinium?. Questionable assignment: Davey and Williams (1969, p.6).

SYNONYM(S): Taxonomic junior synonyms: Hystrichosphaeridium tubiferum var. brevispinum, according to Below (1982c, p.29) - however, Lentin and Williams (1985, p.190) retained Hystrichosphaeridium tubiferum var. brevispinum (as Hystrichosphaeridium tubiferum subsp. brevispinum); Hystrichosphaeridium (as and now Litosphaeridium) arundum, according to Below (1982c, p.29) - however, Lentin and Williams (1985, p.227) retained Litosphaeridium arundum.

COMMENTS: This combination, as a questionable assignment, was not validly published in Davey and Williams (1966b, p.95), since these authors did not fully reference the basionym.

AGE: Late Cretaceous.


Infraspecific taxa:


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