Detail showing feathers and caudal vertebrae of a modern bird. This image, from the Swedish encyclopedia <i><a href="https://en.wikipedia.org/wiki/Nordisk_familjebok" class="extiw" title="en:Nordisk familjebok">Nordisk familjebok</a></i>, is intended to compare a modern bird's tail with <i><a href="https://en.wikipedia.org/wiki/Archaeopteryx" class="extiw" title="en:Archaeopteryx">Archaeopteryx</a></i> tail.
<i>Nordisk familjebok</i>
2005-10-23 14:14
<p><i><a rel="nofollow" class="external text" href="http://runeberg.org/nfba/0758.html">Nordisk familjebok</a></i>
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<ul><li>Uploaded by <a href="//commons.wikimedia.org/wiki/User:V%C3%A4sk" title="User:Väsk">Väsk</a></li></ul>