Chatangiella chetiensis, (Vozzhennikova, 1967), Lentin and Williams, 1976; Emendation: Lebedeva in Ilyina et al., 1994, p.67-68, as Chatangiella chetiensis.

Taxonomic senior synonym: Australiella (as Chatangiella) bondarenkoi, according to Lentin and Vozzhennikova (1990, p.41) - however, Lebedeva in Ilyina et al. (1994, p.67) retained Chatangiella chetiensis.
Taxonomic junior synonym: Chatangiella obtusa, according to Lebedeva in Ilyina et al. (1994, p.67).

Holotype: Vozzhennikova, 1967, pl.60, figs.1a-b
Locus typicus: Khatanga depression (Northern Siberia), Russia
Stratum typicum: Santonian

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Original description as Australiella chetiensis: [Vozzhennikova, 1967, p. 60]: (Translation: Lentin and Vozzhennikova, 1990):

Description:
Theca elongated along the longitudinal axis and slightly constricted about the upper level of the internal body. It is divided into equal parts by a slightly spiral, equatorial girdle. Epitheca strongly expanded in the upper part which then tapers sharply to give a short apical horn at the distal end of which there is a small club-shaped process. Hypotheca gradually tapering towards the antapex, with two antapical horns of different sizes. The internal body is large, oval and occupies the greater part of the theca, being closely appressed to the thin, slightly convex lateral walls of the theca. The walls of the internal body are thickened dorsally and ventrally and are granular. The middle part of the theca is covered with short spinous processes, the density of which diminishes towards the poles. Transverse furrow and longitudinal furrow bounded by rows of spines. The longitudinal furrow is situated on the hypotheca and extends to the antapex.

Dimensions:
Holotype: 180 µm long and 51 µm wide.