de Winter, A.J. (2008). Redefinition of Thapsia Albers, 1860, and description of three more helicarionoid genera from western Africa (Gastropoda, Stylommatophora). Zoologische Mededelingen (Leiden), 82 (24-41), 441-477
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de Winter, A.J.
2008
Redefinition of Thapsia Albers, 1860, and description of three more helicarionoid genera from western Africa (Gastropoda, Stylommatophora).