Figure 4 in The evolutionary radiation of modern birds (Neornithes): reconciling molecules, morphology and the fossil record

Figure 4. Phylogenetic relationships within Palaeognathae including the well-represented fossil taxa Palaeotis and Lithornis (see text for details): A, new specimen of Lithornis from the Palaeocene-Lower Eocene Fur Formation of Denmark (Dankrae Collections of the Geologisk Museum, Copenhagen, DK 330) encased in cement stone nodule; B, skull of DK 330 acid prepared in oblique lateral view; C, palate of Lithornis in ventral view (ba, basitemporal plate; de, dentary; pa, palatine; pt, pterygoid; vo, vomer); D, the phylogenetic placement of Lithornis and Palaeotis inferred from cladistic analysis of osteological characters (see G. J. Dyke & M. van Tuinen, unpubl. data for details of analysis and matrices).