MolluscaBase taxon details
original description
(of Turritella (Proto) mutabilis G. B. Sowerby I, 1847 †) Smith, J. (1847). On the age of the Tertiary beds of the Tagus, with a catalogue of the fossils. <em>Quarterly Journal of the Geological Society of London.</em> 3: 410-422, pls. 15-20., available online at https://www.biodiversitylibrary.org/page/36933175
page(s): p. 416, 421, pl. 20, fig. 26. [details]
additional source
Stefanini, G. (1916). Fossili del Neogene Veneto. <em>Memorie degli Instituti di Geologia e Mineralogia dell'Università di Padova.</em> 4: 3–198, 7 pls.
page(s): p. 94-95.; note: Identification to be confirmed. [details]
new combination reference
Dollfus, G.-F., Berkeley-Cotter, J.-C. & Gomes, J.-P. (1904). Mollusques Tertiaires du Portugal. Planches de Céphalopodes, Gastéropodes et Pélécypodes, laissées par Pereira da Costa, accompagnées d'une explication sommaire et d'une esquisse géologique. Commission du Service Géologique du Portugal. pp. 46., available online at https://www.biodiversitylibrary.org/page/38925953
page(s): p. 1, pl. 28, fig. 17. [details]