Fig 2. SEM images of a proximal arm vertebra of <i>Ophiozonella falklandica</i>, dorsal view.
<dl><dd>(A) Selecting a place to measure the length (horizontal line) and width (vertical lines) is difficult due to the complicated shape of the ossicle. (B) For a more standardized approach, in the software ImageJ a polygonal line is drawn around the shape of the ossicle. (C) Using a built in function of ImageJ an ellipse is then fitted to the ossicle; major (here length) and minor (here width) axes are measured automatically. Scale bar 0.1 mm.</dd></dl>
Stöhr S, Martynov A (2016) Paedomorphosis as an Evolutionary Driving Force: Insights from Deep-Sea Brittle Stars. <i>PLoS ONE</i> 11(11): e0164562. <a rel="nofollow" class="external free" href="https://doi.org/10.1371/journal.pone.0164562">https://doi.org/10.1371/journal.pone.0164562</a>
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