(ofDefrancia ponsonbyi G. B. Sowerby III, 1892)Sowerby, G. B. III. (1892). <i>Marine shells of South Africa. A catalogue of all the known species with references to figures in various works, descriptions of new species, and figures of such as are new, little known, or hitherto unfigured</i>, London: G. B. Sowerby. 89 pp., 5 pls. , available online athttps://www.biodiversitylibrary.org/page/1353472 page(s): 7, pl. 1, fig. 5. [details]
MolluscaBase eds. (2024). MolluscaBase. Clathurella ponsonbyi (G. B. Sowerby III, 1892). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=816623 on 2024-05-01
original description(ofDefrancia ponsonbyi G. B. Sowerby III, 1892)Sowerby, G. B. III. (1892). <i>Marine shells of South Africa. A catalogue of all the known species with references to figures in various works, descriptions of new species, and figures of such as are new, little known, or hitherto unfigured</i>, London: G. B. Sowerby. 89 pp., 5 pls. , available online athttps://www.biodiversitylibrary.org/page/1353472 page(s): 7, pl. 1, fig. 5. [details]