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. 2018 Nov 22;8:17241. doi: 10.1038/s41598-018-35564-4

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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The distribution of toheroa (Paphies ventricosa) in Aotearoa (New Zealand). The locations where major populations have been recorded since the beginning of the 20^th century are indicated by bold and underlined text. Sites where toheroa have been anecdotally reported or where shells or small numbers of living toheroa have been occasionally reported are indicated in italics. Toheroa populations sampled for this study are indicated by black circles.