The posterior braincase shows an overall trend towards reduction in the number of discrete elements through fusion, i.e. the basisphenoid and parasphenoid often fuse to form the parabasisphenoid, and the exoccipital and the opisthotic often fuse to form the otoccipital (Knoll et al. 2012 ).
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Computed tomography analysis of the cranium of Champsosaurus lindoei and implications for the choristoderan neomorphic ossification.
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