Hystrichosphaeridium tubiferum subsp. ovale

subsp. ovale Marheinecke, 1992, p.59–60, pl.10, figs.11,13–14.  Holotype: Marheinecke, 1986, pl.6, figs.2–3, as Hystrichosphaeridium tubiferum; Marheinecke, 1992, pl.10, figs.13–14; Fauconnier and Masure, 2004, pl.47, figs.8–10.  Contrary to the opinion of Lentin and Williams (1993, p.337), Williams et al. (1998, p.318) considered this name to be validly published.  Age: early Maastrichtian.

Parent: Hystrichosphaeridium tubiferum