The Devonian Famennian Condonont fossils which include Palmatlepis gracilis gracilis, P. gracilis sigmoidalis, and Polygnathus germanus are discovered for the first time in the Changjiang area of Hainan Island.

 
  • 在海南岛昌江地区首次发现泥盆纪法门期牙形刺 Palmatolepis gracilis gracilis;P.
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