A Study on the Variation in the Teeth of Desmostylus

Abstract

Fro his sfudy on the variation in the teeth of Desmostylus, comparing them with that of the human teeth, the author finds that they show a tendency of degeneration, and concludes., That Desmostylus is a degenerate mammal., It is therefore inferred that the geological distribution of Desmostylus is limited to a narrow range of time (Middle Miocene)., This inference has been confirmed by stratigraphic studies.,