<p>Key spots for <a href="//commons.wikimedia.org/wiki/File:Haeckel_Arachnida.jpg" title="File:Haeckel Arachnida.jpg">Image:Haeckel_Arachnida.jpg</a>. Original is public domain, and I am releasing this version (created by me) as public domain also.
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Created with Inkscape 0.42 and Imagemagick.
No machine-readable author provided. <a href="//commons.wikimedia.org/wiki/User:Pengo" title="User:Pengo">Pengo</a> assumed (based on copyright claims).
2 March 2006 (original upload date)
No machine-readable source provided. Own work assumed (based on copyright claims).