Cyclozyga sinusigera Yoo

Yoo, E. K., 1994, Early Carboniferous Gastropoda from the Tamworth Belt, New South Wales, Australia, Records of the Australian Museum 46 (1), pp. 63-120 : 86

publication ID	https://doi.org/ 10.3853/j.0067-1975.46.1994.18
DOI	https://doi.org/10.5281/zenodo.6617965
persistent identifier	https://treatment.plazi.org/id/03EB87C3-8605-6B23-FE28-8EA9FDB5F949
treatment provided by	Felipe
scientific name	Cyclozyga sinusigera Yoo
status

Treatment

Cyclozyga sinusigera Yoo View in CoL

PI. 16 figs 6-7

Cyclozyga sinusigera Yoo, 1988: 247 View in CoL , figs 92-94.

Dimensions. Figured specimen ( F78480 View Materials ): H 1.3 mm, W 0.4 mm .

Additional material. 1 specimen from 'Marohn' (Locality 28).

Stratigraphic position. In upper part of the Dangarfield Formation.

Remarks. This is an extremely rare species. Cyclozyga sp. (PI. 19 figs 5-8) from 'Kyndalyn' resembles C. sinusigera Yoo in shell shape and ornamentation, but differs in having closely spaced collabral lirae on teleoconch. Only two specimens of Cyclozyga sp. are obtained. The systematic position of Cyclozyga was discussed by Knight (1930a), and Hoare & Sturgeon (1978). The North American species of Cyclozyga have more strongly developed revolving costellae and are more attenuate in form.