Praecalcigonellum sulcatum

sulcatum (Keupp, 1979c, p.658, pl.6, figs.16–21) Streng et al., 2004, p.474. Holotype: Keupp, 1979c, pl.2, figure labelled as "C. sulcatum". Originally Calcigonellum, subsequently (and now) Praecalcigonellum. Age: early Hauterivian.