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. 2015 Feb 12;3:e759. doi: 10.7717/peerj.759

Figure 5. Posterior cervical vertebrae showing the character states for procoely and amphicoely used in the phylogenetic dataset.

Figure 5

Anterior is to the left of the page. Labels follow the convention ‘character.character state’. (A) Shamosuchus djadochtaensis (IGM 100/1195); (B) Pachycheilosuchus trinquei (SMU 75105); (C) Alligator mississippiensis (AMNH 1106 C.A.); (D) Eutretauranosuchus delfsi (CMNH 8028). (A)–(C) Illustrate the derived condition of strong procoely with a well-developed posterior condyle on the vertebral body. (D) Illustrates the plesiomorphic condition of amphicoely where the anterior cotyle is weakly concave and there is no posterior condyle, just a weakly concave cotyle. Images in (B) and (C) are reversed to aid comparison.