CLASSIFICATION AND EVOLUTION OF THE SIPHNEIDAE

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概要

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• The family Siphneidae are classified into three subfamilies, Prosiphneinae, Myospalacinae and Mesosiphneinae, based on patterns of the occipital shield and some corresponding features on skulls. The convex-skulled Prosiphneinae are an evolutionary stock probably with an origin in the genus Plesiodipus from the late Tunggurian (MN8), and includes the extant genus Eospalax. Both flat-skulled Myospalacinae and concave-skulled Mesosiphneinae seem to be collateral branches from the Prosiphneinae and perhaps have a common origin in the genus Myotalpavus from the Late Miocene. The Myospalacinae have an extant genus Myospalax, while the Mesosiphneinae completely became extinct in the early Middle Pleistocene. Each subfamily shows the same evolution of molars from rooted to rootless or from brachydont to hypsodont and from orthomegodont to clinomegodont, therefore they can be classified into different genera and species.

• 国立科学博物館の論文

著者

• Zheng Shaohua

  Institute Of Industrial Science University Of Tokyo

• Zheng Shaohua

  Institute Of Vertebrate Paleontology And Paleoanthropology Academia Sinica

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