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. 2011 Apr 20;(91):1–116. doi: 10.3897/zookeys.91.709

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N. Adam Smith

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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Figure 9. — Comparison of charadriiform and sphenisciform sterni. A Alca torda (USNM 502382) B Aethia psittacula (NCSM 18514) C Sterna anaethetus (NCSM 17085) D Hydrophasianus chirurgus (USNM 490566) E Eudyptula minor (TMM M-391).