Spinidinium montanaense

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"montanaense" (Harland, 1977a, p.184–185, pl.25, figs.4,6–7,10–12) Lentin and Williams, 1977b, p.147.  Holotype: Harland, 1977a, pl.25, fig.4.  NOW Alterbidinium.  Originally Deflandrea, subsequently Spinidinium, thirdly Alterbia (combination illegitimate), fourthly (and now) Alterbidinium.  Age: late Campanian–Maastrichtian.

Parent: Spinidinium