Hystrichosphaeridium proprium Marheinecke, 1992

Name not validly published since lodgment of holotype not specified.
Marheinecke, 1992, gave the citation "Hystrichosphaeridium proprium n.sp. proprium n.ssp.".
Holotype: Marheinecke, 1992, pl.11, figs.4-6
Age: Late Maastrichtian