Fig. 4

Summary of tests for Long Branch Attraction. Unrooted trees from analyses excluding putative long-branch taxa are shown. All analyses were conducted under maximum likelihood, partitioned empirical models. a Tree inferred without outgroups. b Tree inferred without outgroups and the sponge Amphimedon. c Tree inferred without the sponge Amphimedon. Black circles indicate bootstrap support of 100 % from 1000 replicates, red circles indicate support of 95 to 99 % and blue circles indicate support of 95 % or less. Non-bilaterian metazoan taxa are highlighted