MolluscaBase taxon details
original description
(of Ancylus (Ferrissia) gordonensis Melvill & Ponsonby, 1903) Melvill, J. C. & Ponsonby, J. H. (1903). Descriptions of thirty-one terrestrial and fluviatile Mollusca from South Africa. <em>The Annals and Magazine of Natural History.</em> (7) 12 (72): 595-609, pl. 31-32. London. [1 December]., available online at https://www.biodiversitylibrary.org/page/29993365
page(s): 606-607, pl. 31, fig. 2. [details]
additional source
Connolly, M. (1939). A monographic survey of South African non-marine Mollusca. <em>Annals of the South African Museum.</em> 33: 1-660.
page(s): 515 [details] Available for editors [request]
additional source
Walker, B. (1924). The Ancylidae of South Africa. Privately published. Pp. 1–82, 2 pls. Dated 1923, but published 1924 according to Brown (1994: 299).
page(s): 34 [details]