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Updated: May 27, 2025
But we may conclude with some confidence that they bring us near to the point of origin, and probably had at least a common ancestor with the mammals. The distribution of the Theriodonts suggests a further idea of interest in regard to the origin of the mammals.
One branch of these Theromorph reptiles approach the mammals so closely in the formation of the teeth that they have received the name "of the Theriodonts", or "beast-toothed" reptiles. As the earlier remains of mammals which we find are generally teeth and jaws, the resemblance of the two groups leads to some confusion in classifying them, but from our point of view it is not unwelcome.
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