Pterodinium alectrolophum

"alectrolophum" (Sarjeant, 1966b, p.134-135, pl.15, figs.3-6; text-fig.34) Below, 1982d, p.352-353.  Holotype: Sarjeant, 1966b, pl.15, figs.5-6; Jan du Chêne et al., 1986a, pl.54, figs.15-16.  NOW Impagidinium.  Originally Leptodinium, subsequently (and now) Impagidinium, thirdly Pterodinium.  Age: mid Barremian.

Parent: Pterodinium