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. 2017 Mar 1;17:62. doi: 10.1186/s12862-017-0917-z

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© The Author(s). 2017

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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 Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 3 — Comparative 3D tomographic reconstructions of the internal anatomy. a. Chrysomallon squamiferum (redrawn from [35]). b. Gigantopelta chessoia. Colour groups correspond to specific anatomical systems: grey/black, digestive tract; brown, oesophageal gland; translucent blue, ctenidium; red, heart; yellow, gonad; green, nephridium; fuchsia/blue, nervous and sensory systems. Abbreviations: a, auricle; cg, cerebral ganglia; ct, ctenidium; dg, digestive gland; g, gonad; ls, non-ganglionic lateral swelling [35], ne, nephridium; oe, oesophagus; og, oesophageal gland; pg, pedal ganglia; ps, non-ganglionic pedal swelling [35]; r, radula; rc, radula cartilage; re, rectum; ss, statocysts; v, ventricle