Hystrichosphaeridium tenuitubatum

tenuitubatum Marheinecke, 1992, p.61–62, pl.11, figs.10–11.  Holotype: Marheinecke, 1986, pl.17, figs.5–6, as Hystrichosphaeridium sp.; Marheinecke, 1992, pl.11, figs.10–11; Fauconnier and Masure, 2004, pl.45, figs.4–5.  Contrary to the opinion of Lentin and Williams (1993, p.334), Williams et al. (1998, p.316) considered this name to be validly published.  Age: early Maastrichtian.

Parent: Hystrichosphaeridium