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. Author manuscript; available in PMC: 2014 May 19.
Published in final edited form as: Nature. 2011 Feb 10;470(7333):255–258. doi: 10.1038/nature09676

Figure 3. Phylogeny of 66 animal species based on EST sequences.

Figure 3

Analysis of 197 genes, 38,330 unambiguously aligned positions, 30% missing data. Tree was reconstructed using the CAT + Γ model under a Bayesian analysis. Major accepted metazoan clades (for example, Lophotrochozoa, Ecdysozoa, Protostomia) are supported. Acoela and Nemertodermatida are sister groups (Acoelomorpha). Xenoturbella and Acoelomorpha are sister groups (phylum Xenacoelomorpha). Xenacoelomorpha is the sister taxon of Ambulacraria (Xenambulacraria) within the deuterostomes. Level of bootstrap support is indicated. Similar support is obtained when jack-knifing 50% of the genes (Supplementary Fig. 9). Scale bar, substitutions per position.