Isabelidinium balmei

"balmei" (Cookson and Eisenack, 1962b, p.486) Stover and Evitt, 1978, p.109.  Emendation: Morgan, 1977, p.130, as Alterbia minor.  Holotype: Cookson and Eisenack, 1960a, pl.1, fig.1; Morgan, 1977, text-fig.2.  NOW Spinidinium balmei.  Originally Deflandrea minor (name illegitimate), subsequently Deflandrea balmei, thirdly Alterbia balmei (combination illegitimate), fourthly Isabelidinium balmei, fifthly (and now) Spinidinium balmei, sixthly Magallanesium balmei.  Taxonomic senior synonym: Palaeohystrichophora (as Diconodinium) minuta, according to Morgan (1977, p.130) — however, Lentin and Williams (1981, p.156) retained Deflandrea (as Isabelidinium, now Spinidinium) balmei.  Age: Late Cretaceous.

Parent: Isabelidinium