Ceratocystidiopsis ludbrookii, Cookson and Eisenack 1958; Emendation: Morgan, 1980, p.23, as Endoceratium ludbrookiae.

Now Endoceratium. Originally Ceratocystidiopsis, subsequently Pseudoceratium, thirdly (and now) Endoceratium.

Holotype: Cookson and Eisenack, 1958, pl.5, fig.7
Locus typicus: Cootabarlow, S Australia
Stratum typicum: Albian

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Original description: [Cookson and Eisenack, 1958, p. 53]:

Description:
Theca approximating in outline to an isosceles triangle with convex sides, a rather blunt obliquely directed apical horn and two divergent and somewhat unequal antapical horns with more pointed apices. The internal capsule is sub-triangular with a flat base, convex sides and a blunt apex and is separated from the outer membrane by a space of variable width. The wall of the internal body is finely granular, that of the outer membrane smooth. The apical region of the theca may become completely detached along an irregular line that extends obliquely across its upper portion.

Affinities: (p. 54):
Ceratocystidiopsis ludbrookii agrees in general features with C. molesta Defl. from the French Senonian, but differs from it both in size and shape.