Alterbidinium pentaradiatum subsp. precedum

subsp. precedum (Cookson and Eisenack, 1974, p.49, pl.20, figs.1-2) Lentin and Williams, 1985, p.15.  Holotype: Cookson and Eisenack, 1974, pl.20, fig.1.  Originally Deflandrea pentaradiata subsp. preceda, subsequently Alterbia? pentaradiata subsp. preceda (combination illegitimate), thirdly (and now) Alterbidinium? pentaradiatum subsp. precedum.  Age: Paleocene. Parent: Alterbidinium pentaradiatum