Chatangiella serratula, (Cookson and Eisenack, 1958), Lentin and Williams, 1976

Holotype: Cookson and Eisenack, 1958, pl.4, fig.4
Locus typicus: Carnavron Basin, W Australia
Stratum typicum: Campanian-Early Maastrichtian

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Original description as Deflandrea serratula: [Cookson and Eisenack, 1958, p. 28]:

Description:
The theca is somewhat longer than broad and is widest in the region of the well defined transverse girdle, narrowing from thence towards a prominent apical region which is shaped like a pointed arch, and towards a more or less concave antapex on one side of which is a short pointed horn. A broad longitudinal furrow is present on the hypotheca, but it does not extend to the antapex. The outer membrane is thin, transparent and rather coarsely granular, but on both sides of the epitheca, between the girdle and the distal limits of the apical arch, it is finely serrated. The capsule is large in proportion to the size of the theca and extends to the lateral margins. In the type, the position of the future pylome is clearly indicated.

Dimensions:
Type - theca 73x48 µm, capsule 38x47 µm, pylome 14 µm across.