Fig. 3: Ancestral state reconstruction of uncinate processes in archosaurs.
From: Deep reptilian evolutionary roots of a major avian respiratory adaptation
Results of ancestral state reconstruction on simplified version of informal consensus cladogram with branch length estimates, using preferred coding approach described in this study. Detailed description and raw data are provided in sections 3 to 6 of Supplementary Information. Nodes of interest are coloured according to the results from maximum parsimony, and estimated probabilities from maximum likelihood and Bayesian inference are indicated using text. Major clades of Archosauria with evidence of cartilaginous uncinate processes are labelled and shaded blue; clades with evidence of ossified uncinate processes are labelled and shaded pinkish red; clade with evidence of both cartilaginous and ossified uncinate processes is labelled and shaded purple; and clades for which no evidence is available are labelled and shaded grey. Complete results of ancestral state reconstruction for major clades are given in section 7 of Supplementary Information. Stages of hypothetical evolutionary scenario are outlined to left of cladogram. A Archosauria, D Dinosauria, E Early, Eo Eocene, L Late, M Middle, Mf Maniraptoriformes, Mi Miocene, MB Bayesian inference, ML maximum likelihood, Ol Oligocene, P Pennaraptora, Pa Paleocene, Q Quaternary, T Theropoda.
