MolluscaBase taxon details
original description
Beu, A. (2010). Marine Mollusca of isotope stages of the last 2 million years in New Zealand. Part 3. Gastropoda (Vetigastropoda - Littorinimorpha). <em>Journal of the Royal Society of New Zealand.</em> 40(3-4): 59-180., available online at https://doi.org/10.1080/03036758.2010.500717 [details]
additional source
Boettger, O. (1880). Die Conchylien der unteren Tertiärschichten. Die Tertiärformation von Sumatra und ihre Thierreste. <em>Palaeontographica, Supplement.</em> In Verbeek, R. D. M.; Boettger, O. & von Fritsch, K. (Eds) 3(8): 29-120., available online at https://www.biodiversitylibrary.org/page/48109857 [details]