Cerodinium diebelii subsp. rigidum
From dinoflaj2
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