Diagrama de la anatomía interna de una araña de dos pulmones
<ul><li><a href="//commons.wikimedia.org/wiki/File:Spider_internal_anatomy-en.svg" title="File:Spider internal anatomy-en.svg">Spider_internal_anatomy-en.svg</a>: *<a href="//commons.wikimedia.org/wiki/File:Spider_internal_anatomy.png" title="File:Spider internal anatomy.png">Spider_internal_anatomy.png</a>: John Henry Comstock</li>
<li>derivative work: <a href="//commons.wikimedia.org/wiki/User:Pbroks13" title="User:Pbroks13">Pbroks13</a> (Ryan Wilson) (<a href="//commons.wikimedia.org/wiki/User_talk:Pbroks13" class="mw-redirect" title="User talk:Pbroks13"><span class="signature-talk">talk</span></a>)</li>
<li>derivative work: <a href="//commons.wikimedia.org/wiki/User:Xvazquez" title="User:Xvazquez">Xvazquez</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Xvazquez" title="User talk:Xvazquez"><span class="signature-talk">talk</span></a>)</li></ul>
CC BY 3.0
<ul><li><a href="//commons.wikimedia.org/wiki/File:Spider_internal_anatomy-en.svg" title="File:Spider internal anatomy-en.svg">Spider_internal_anatomy-en.svg</a></li></ul>