original description(ofTurbonilla aspera Gabb, 1861 †)Gabb, W. M. (1861). Descriptions of new species of American Tertiary fossils and a new Carboniferous cephalopod from Texas. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 13: 367-372., available online athttps://www.biodiversitylibrary.org/page/1683496 page(s): 368 [details]
basis of recordBartsch, P. (1911). The Recent and fossil mollusks of the genus <i>Bittium</i> from the west coast of America. <em>Proceedings of the United States National Museum.</em> 40 (1826): 383-414, pls 51-58., available online athttps://www.biodiversitylibrary.org/page/15845645 page(s): 405, pl. 56 fig. 3 [details]
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