Photograph of a paratype of <a href="https://en.wikipedia.org/wiki/Paedophryne_amauensis" class="extiw" title="en:Paedophryne amauensis">Paedophryne amanuensis</a> (LSUMZ 95004) on U.S. dime (diameter 17.91 mm).
Rittmeyer EN, Allison A, Gründler MC, Thompson DK, Austin CC
CC BY 2.5
<p><cite style="font-style:normal">E. N. Rittmeyer et al. (2012). "Ecological Guild Evolution and the Discovery of the World's Smallest Vertebrate". <i>PLoS ONE</i> <b>7</b>: e29797. <a href="https://en.wikipedia.org/wiki/Digital_object_identifier" class="extiw" title="w:Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1371/journal.pone.0029797">10.1371/journal.pone.0029797</a>.</cite> 
</p>
→ <a rel="nofollow" class="external text" href="http://www.plosone.org/article/slideshow.action?uri=info:doi/10.1371/journal.pone.0029797&amp;imageURI=info:doi/10.1371/journal.pone.0029797.g002">Figure 2</a> → <a rel="nofollow" class="external text" href="http://www.plosone.org/article/fetchObjectAttachment.action?uri=info%3Adoi%2F10.1371%2Fjournal.pone.0029797.g002&amp;representation=TIF">tiff</a>