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.

Comparison of total divarication values (DIVTOT, also known as divarication between digits II–IV) values comparing Wupus agilis to Limiavipes curriei (Limiavipedidae), and Cretaceous small- (Irenichnites isp.) medium- (Columbosauripus isp., Magnoavipes isp.) and large-sized (Irenesauripus 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 Wupus agilis is more similar to that of a large bird than that of a small theropod. While Wupus agilis is close in morphology to Limiavipes curriei, they are different enough in both size (Table 1) and total divarication to be considered distinct ichnotaxa.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.