Hystrichokolpoma incertum Michoux, 1985, p.143-144, pl.2, figs.5-7,9,12,13-15; pl.3, figs.11-12; text-figs.3A-B. Holotype: Michoux, 1985, pl.2, figs.5-7; text-figs.3A-B; Fauconnier and Masure, 2004, pl.42, figs.13-15. Questionable assignment: Michoux (1985, p.143). Age: Early-Mid Eocene.