Figure 8. Character history of the length of the first phalanx of digit five compared to the character history of grasping abilities.

Left tree: character history of the length of first phalanx of digit five. The most parsimonious state for the common ancestor is an intermediate value, whereas the most frequent state corresponds to low values (blue range). The longest first phalanx studied belongs to Phyllopezus sp. and Gonatodes sp. High values of this variable were also independently reached in Anolis sp., and Tropidurus sp., while low values were independently acquired by Uromastix sp., Stenocercus sp., and Ameivula sp. Gekkota displays a wide range of values. Gymnophthalmidae and especially Teiidae, tend to exhibit high values, whereas Anguimorpha and Iguania manifest a wider range. Right tree: character history of grasping abilities.