original description
(of Gulella (Silvigulella) turriformis van Bruggen & Van Goethem, 1999) Bruggen, A. C. van; Van Goethem, J. L. (1999). Dr William Adam's iconography of Central and West African <i>Gulella</i> species (Gastropoda Pulmonata: Streptaxidae). Part 3: nine new species from the C.R. Congo. <em>Bulletin de l'Institute Royal des Sciences Naturelles de Belgique, Biologie.</em> 96: 31-45.
page(s): 40, fig. 13. [details] Available for editors [request]
additional source
Brown, K. (2023). A guide to the hunter shells. Vol. 2. The Streptaxoidea. The Enneinae, Orthogibbinae, Marconiinae, Odontartemoninae, Streptaxinae and the Diapheridae. ConchBooks, Germany.
page(s): 204; note: ?Raffraya [details]
From editor or global species database
Taxonomic remark possibly belongs to Raffraya [details]