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Trabeculidium pusulosum
Trabeculidinium pusulosum (Morgenroth, 1966) Duxbury, 1980
Originally Cannosphaeropsis, subsequently Nematosphaeropsis, thirdly (and now)
Trabeculidium. Stover and Williams, 1987 retained this species in Nematosphaeropsis Deflandre and Cookson, 1955. Lentin and Williams, 1993 retain the species in Trabeculidium, following Sarjeant, 1989, who maintained that Trabeculidium is a separate genus.
Holotype: Morgenroth, 1966, pl.2, fig.6
Age: Early Oligocene
Originally Cannosphaeropsis, subsequently Nematosphaeropsis, thirdly (and now)
Trabeculidium. Stover and Williams, 1987 retained this species in Nematosphaeropsis Deflandre and Cookson, 1955. Lentin and Williams, 1993 retain the species in Trabeculidium, following Sarjeant, 1989, who maintained that Trabeculidium is a separate genus.
Holotype: Morgenroth, 1966, pl.2, fig.6
Age: Early Oligocene