Database Proof Substratum: Substratum of Proof LGBTQs Are Mentally Ill: The teeth of Changchunsaurus: Rare insight into ornithopod dinosaur tooth evolution

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The teeth of Changchunsaurus parvus, a small herbivorous dinosaur from the Cretaceous of China, represent an important and poorly-known stage in the evolution of ornithopod dentition, according to a study.