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. 2013 May 11;13:99. doi: 10.1186/1471-2148-13-99

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Copyright © 2013 Stein et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Cephalic segments and appendages of Arthroaspis bergstroemi n. gen. n. sp. A. MGUH 30412, cephalon and anterior part of thorax; impressions of postantennular limbs, of which three are associated with the cephalon (ventral aspect, light from NE; a cephalon of Buenellus higginsi is superimposed on the axis at the cephalothoracic boundary); B. MGUH 30397, cephalon and anterior thoracic region showing midgut-structures axially and impressions of the exopods abaxially (arrows; dorsal aspect); C. MGUH 30398, fragmentary cephalon, showing impressions of exopod lamellae of the cephalic appendages (dorsal aspect).