Reptilia - Choristodera

Synonym: Champsosauriformes Hay 1929 [replaced name]

Parent taxon: Choristodera according to R. Matsumoto et al. 2013

Sister taxa: Cteniogenidae, Cteniogenys, Hyphalosauridae, Hyphalosaurus, Irenosaurus, Khurendukhosaurus, Lazarussuchus, Monjurosuchidae, Monjurosuchus, Pachystropheus, Philydrosaurus, Shokawa

Subtaxa: Champsosauridae, Champsosaurus, Ikechosaurus, Simoedosauridae, Simoedosaurus, Tchoiria

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Ecology: