Illustrations in Bartholin's <i>Historiarum anatomicarum</i> <b>II</b> (1654) for the siren (mermaid) specimen from Brazil dissected in Leiden (left, bottom). Bartholin obtained the skeletal hand and rib parts of it (figures right)
The artwork and pagination differs from the Copenhagen edition (same year), cf. <a href="//commons.wikimedia.org/wiki/File:Bartholin(Copenhagen1854)-Hist_anat-p164a-siren.jpg" title="File:Bartholin(Copenhagen1854)-Hist anat-p164a-siren.jpg">File:Bartholin(Copenhagen1854)-Hist anat-p164a-siren.jpg</a>
Thomas Bartholin
<cite class="book" style="font-style:normal" id="Reference-Bartholin-1654">Bartholin, Thomas (1654) "Historia XI. Sirenis seu Marini Hominis Anatome" in  (in Latin)  <i> <a rel="nofollow" class="external text" href="https://archive.org/details/b30762832/page/162/mode/2up">Thomae Bartholini historiarum anatomicarum rariorum centuria (I et )II</a></i>, <a href="https://en.wikipedia.org/wiki/en:The_Hague" class="extiw" title="w:en:The Hague"><span title="city and municipality in the Netherlands, seat of the Dutch government">The Hague</span></a>:  Ex typographia Adriani Vlacq, p. <a rel="nofollow" class="external text" href="https://archive.org/details/b30,762,832/page/n189/mode/2up">166a</a>  <small></small></cite>