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. 2011 Dec 20;(156):1–24. doi: 10.3897/zookeys.156.2134

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Nesrine Akkari, Henrik Enghoff

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Figures 7–9. — Fine sculpture of the prozonite in pyrgodesmid species. 7 Tonodesmus sp. 8 Cynedesmus sp. 9 Cryptocorypha ornata. Abbreviations: a anterior part of the prozonite, b posterior part of the prozonite, r ridge, s spherical knobs.