MolluscaBase taxon details
original description
(of Turritella importuna Yokoyama, 1924 †) Yokoyama M. (1924). Molluscan remains from the lowest part of the Jo-ban coal-field. <em>Journal of the College of Science, Imperial University of Tokyo.</em> 45(3): 1–22, pls 1–5. [details]
basis of record
Titova L.V. (1994). Revision of the Neogene Turritellidae (Mollusca: Gastropoda) from Kamchatka. <em>Ruthenica.</em> 4(1): 1-20. [details]