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Hystrichosphaeridium proprium ssp. brevispinum
Hystrichosphaeridium proprium ssp. brevispinum (Davey and Williams, 1966) emend. Marheinecke, 1992
Name not validly published since the species name Hystrichosphaeridium proprium is not validly published.
Now Hystrichosphaeridium tubiferum ssp. brevispinum. Originally Hystrichosphaeridium tubiferum var. brevispinum, subsequently (and now) Hystrichosphaeridium tubiferum ssp. brevispinum, thirdly Hystrichosphaeridium proprium ssp. brevispinum (name not validly published).
Tax. jr. synonym of Dapsilidinium? fucosum (Valensi, 1955) Lentin and Williams, 1981, according to Below, 1982. Lentin and Williams, 1985, retained Hystrichosphaeridium tubiferum var. brevispinum as a separate taxon.
Holotype: Davey and Williams, 1966, pl.10, fig.10; Bujak et al., 1980, pl.8, figs.10-12
Age: Early Eocene
Name not validly published since the species name Hystrichosphaeridium proprium is not validly published.
Now Hystrichosphaeridium tubiferum ssp. brevispinum. Originally Hystrichosphaeridium tubiferum var. brevispinum, subsequently (and now) Hystrichosphaeridium tubiferum ssp. brevispinum, thirdly Hystrichosphaeridium proprium ssp. brevispinum (name not validly published).
Tax. jr. synonym of Dapsilidinium? fucosum (Valensi, 1955) Lentin and Williams, 1981, according to Below, 1982. Lentin and Williams, 1985, retained Hystrichosphaeridium tubiferum var. brevispinum as a separate taxon.
Holotype: Davey and Williams, 1966, pl.10, fig.10; Bujak et al., 1980, pl.8, figs.10-12
Age: Early Eocene