Trees resulting from analysis of corrected matrix of Gingerich et al. (2011).

A, Single most parsimonious tree including extant taxa and Darwinius only. This tree topology was produced from an exhaustive search using the corrected version of the Gingerich et al. [8] matrix (corrections noted in Table 9;see also Appendix S1, section 10 for nexus file). This topology was also produced by analysis of the corrected matrix with additional characters noted in Table 10 (see Appendix S1, section 17 for nexus file). These trees differ only in statistics such as length, CI, HI, RI, and RC. See Results. B, Single most parsimonious tree resulting from analysis of the corrected matrix with additional fossil taxa added (see SI Appendix S1, sections 14–16 for nexus files).