(ofScalaria aspera R. B. Watson, 1897)Watson, R. B. (1897). On the marine Mollusca of Madeira; with descriptions of thirty-five new species, and an index-list of all the known sea-dwelling species of that island. <em>Journal of the Linnean Society of London, Zoology.</em> 26(19): 233-329, pl. 19-20., available online athttp://www.biodiversitylibrary.org/page/31882661[details]
MolluscaBase eds. (2021). MolluscaBase. Epitonium asperum (R. B. Watson, 1897). Accessed at: http://molluscabase.org/aphia.php?p=taxdetails&id=524351 on 2024-04-25
original description(ofScalaria aspera R. B. Watson, 1897)Watson, R. B. (1897). On the marine Mollusca of Madeira; with descriptions of thirty-five new species, and an index-list of all the known sea-dwelling species of that island. <em>Journal of the Linnean Society of London, Zoology.</em> 26(19): 233-329, pl. 19-20., available online athttp://www.biodiversitylibrary.org/page/31882661[details]
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