Cerodinium diebelii subsp. rigidum

subsp. rigidum (May, 1980, p.75–76, pl.8, figs.9–10,15) Lentin and Williams, 1987, p.114.  Holotype: May, 1980, pl.8, figs.9,15.  Originally Deflandrea diebelii subsp. rigida, subsequently Ceratiopsis diebelii subsp. rigida (combination illegitimate), thirdly (and now) Cerodinium diebelii subsp. rigidum.  Age: Maastrichtian.

Parent: Cerodinium diebelii