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  • , the Permo-Triassic boundary and the various boundaries within the Triassic, and the derivation of kannemeyerids from dicynodontids by the late Permian or early Triassic and their middle Triassic age.
  • This paper deals chiefly with the Permo-Triassic continental succession in China, with six vertebrate horizons or faunas and their relationship with corresponding faunas in the other parts of the world, discussion on the ages of the various faunas