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Hystrichosphaeridium tubiferum subsp. brevispinum

Hystrichosphaeridium tubiferum subsp. brevispinum (Davey and Williams, 1966b, p.58, pl.10, fig.10) Lentin and Williams, 1973, p.80.

EMENDATION: Marheinecke, 1992, p.61, as Hystrichosphaeridium proprium subsp. brevispinum.

TYPE: Holotype: Davey and Williams, 1966b, pl.10, fig.10; Bujak et al., 1980, pl.8, figs.10-12.

HISTORY: Originally Hystrichosphaeridium tubiferum var. brevispinum, subsequently (and now) Hystrichosphaeridium tubiferum subsp. brevispinum, thirdly Hystrichosphaeridium proprium subsp. brevispinum. Lentin and Williams (1993, p.336) retained this taxon as a subspecies of Hystrichosphaeridium tubiferum.

SYNONYM(S): Taxonomic senior synonym: Micrhystridium (as Dapsilidinium?) fucosum, according to Below (1982c, p.29) - however, Lentin and Williams (1985, p.190) retained Hystrichosphaeridium tubiferum subsp. brevispinum.

AGE: Early Eocene.


Infraspecific taxa:


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