Impagidinium alectrolophum
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alectrolophum (Sarjeant, 1966b, p.134–135, pl.15, figs.3–6; text-fig.34) Stover and Evitt, 1978, p.165. Holotype: Sarjeant, 1966b, pl.15, figs.5–6; Jan du Chêne et al., 1986a, pl.54, figs.15–16. Originally Leptodinium, subsequently (and now) Impagidinium, thirdly Pterodinium. Lentin and Williams (1985, p.194) retained this species in Impagidinium. Age: middle Barremian.
Parent: Impagidinium