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. 2010 Oct 14;5(10):e13354. doi: 10.1371/journal.pone.0013354

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Nathan D. 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 properly credited.

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Ciconia abdimii FMNH 368771 (A), Sula sula FMNH 339372 (B), Fregata minor FMNH 339421 (C), Fregata magnificens FMNH 339418 (D), Limnofregata azygosternon FMNH PA 731 (G), and Limnofregata azygosternon USNM 22753 (H), in ventral aspect; and left phalanges II-1 of Fregata magnificens FMNH 339418 (right element reversed) (E), and Limnofregata azygosternon USNM 22753 (F), in dorsal aspect. Scale bars equal 10 mm. Abbreviations: fen, fenestra.