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. 2015 Oct 6;5:14864. doi: 10.1038/srep14864

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Copyright © 2015, Macmillan Publishers Limited

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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Photograph and interpretive drawing of slab. Black-lined inset in the photograph delineates the area of the transition between bone and soft tissue magnified in Fig. 2A. Abbreviations: alp, alular patagium; cl, calamus; ks, keratinous sheath; mc-II; metacarpal II; mc-III, metacarpal III; pf, plumulaceous feathers; pr, primary remex; prg, propatagium; psg, postpatagium; r, radius; sr, secondary remex; ul, ulna; I-pI, first phalanx of digit I; I-u, ungual phalanx of digit I; II-pI, first phalanx of digit II; II-pII, second phalanx of digit II; II-u, ungual phalanx of digit II; III-pI, first phalanx of digit III; III-pII, second phalanx of digit III.