Comparison of total divarication (also known as divarication between digits II-IV, DIVTOT) of Limiavipedidae, theropod traces, and traces of Mesozoic, Cenozoic, and extant birds.

<p>Comparison of total divarication values (DIVTOT, also known as divarication between digits II–IV) values comparing <i>Wupus agilis</i> to <i>Limiavipes curriei</i> (Limiavipedidae), and Cretaceous small- (<i>Irenichnites</i> isp.) medium- (<i>Columbosauripus</i> isp., <i>Magnoavipes</i> isp.) and large-sized (<i>Irenesauripus</i> isp.) theropod ichnotaxa, and the traces of Mesozoic, Cenozoic and extant avians. While traces of large birds do overlap in some aspects of morphology with similarly-sized theropod traces, the mean total divarication of <i>Wupus agilis</i> is more similar to that of a large bird than that of a small theropod. While <i>Wupus agilis</i> is close in morphology to <i>Limiavipes curriei</i>, they are different enough in both size (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0124039#pone.0124039.t001" target="_blank">Table 1</a>) and total divarication to be considered distinct ichnotaxa.</p><p>Comparison of total divarication (also known as divarication between digits II-IV, DIVTOT) of Limiavipedidae, theropod traces, and traces of Mesozoic, Cenozoic, and extant birds.