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. 2014 Dec 23;2:e711. doi: 10.7717/peerj.711

Figure 1. Phylogenetic tree showing the major clade division of modern birds into Palaeognathae and Neognathae, and their fossil outgroups.

Figure 1

Phylogeny constructed from the data of Hackett et al. (2008), Harshman et al. (2008), Phillips et al. (2010), Smith, Braun & Kimball (2013) and Mitchell et al. (2014), with outgroup positions from Livezey & Zusi (2007).