<p>Anatomy of Anhinga anhinga - 
</p>
<ul><li>Fig. 1. View of left side of neck of Plotus anhinga, dissected. l.c.a. longus colli anterior muscle; l.c.p. longus colli posterior muscle. The fibrous representative of Donitz's bridge is seen attached to the ninth cervical vertebra.</li>
<li>Fig. 2. View of part of the posterior region of the neck of Plotus anhinga. The roman figures refer to the cervical vertebrae counted from the head. Donitz's bridge is seen attached to the ninth; and at a is also seen a fibrous band, which is of similar function, attached to the eleventh. At b is seen the fasciculus of the tendon of the posterior neck-muscle which traverses the fibrous loop, which latter has been removed on the left side.</li></ul>
<bdi><a href="https://en.wikipedia.org/wiki/en:Joseph_Smit" class="extiw" title="w:en:Joseph Smit"><span title="Dutch natural history illustrator">Joseph Smit</span></a>
</bdi>
1876
<a rel="nofollow" class="external text" href="https://archive.org/stream/cbarchive_49348_notesontheanatomyofplotusanhin1833/notesontheanatomyofplotusanhin1833#page/n3/mode/1up">Proceedings of the Zoological Society of London 1876</a> accompanying - notes on the anatomy of the Plotus anhinga by A H Garrod