Figure 5From: Integration, heterochrony, and adaptation in pedal digits of syndactylous marsupialsEvent pair mapping. Phylogeny of the species used for ossification analysis of digit ossifications, with mapping of the example of scores for intermediate digit IV versus proximal digit II. In all syndactylous marsupials, intermediate digit IV ossifies before proximal digit II (white lines), while both ossifications appear simultaneously in all other mammals (solid black line).Back to article page