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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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Cephalon and anterior trunk of Arthroaspis bergstroemi n. gen. n. sp. A. MGUH 30411 specimen with cephalon and fully articulated thorax. Potential muscle preservation (dorsal aspect); B. MGUH 30414 impression of doublure margin and prehypostomal sclerite (ventral aspect); C. MGUH 30405 doublure with terrace lines on left anterolateral margin of cephalon (ventral aspect, orientation WNW); D. MGUH 30398 marginal rim and fingerprint-like cuticular sculpture on left anterolateral margin of cephalon (dorsal aspect, orientation ENE); E. MGUH 30388 disarticulated cephalon with strong compactional folds. For abbreviations see Table 1 (dorsal aspect).