Cribroperidinium wilsonii subsp. trabeculosum

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subsp. trabeculosum Slimani and Louwye, 2013, p.13,15; pl.2, figs.1-9,11,13.  Holotype: Slimani and Louwye, 2013, pl.2, figs.1-3.  Originally (and now) Cribroperidinium wilsonii (Yun Hyesu) subsp. trabeculosum, subsequently Cribroperidinium graemei subsp. trabeculosumSlimani and Louwye (2013) did not specify whether they were including this subspecies in Cribroperidinium wilsonii (Yun Hyesu, 1981) Poulsen or Cribroperidinium wilsonii (Slimani, 1994) Schiøler.  Williams and Fensome (2016, p.140) assumed that the intended assignment was to the latter, which is illegitimate, and so transferred the subspecies to the substitute name Cribroperidinium graemei.  However, H. Slimani (personal communication to GLW) affirms that the taxon was intended to be a subspecies of Cribroperidinium wilsonii (Yun Hyesu, 1981) Poulsen.  Age: Late Campanian.

Parent: Cribroperidinium wilsonii_Yun Hyesu 1981