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在线翻译:
szdaily -> China -> 
Study sheds light on tooth evolution of early dinosaur
    2018-11-22  08:53    Shenzhen Daily

This photo shows a tooth of a theropod and two teeth on part of the left dentary of Changchunsaurus parvus (right). A new study published recently in the journal PLOS ONE describes tooth histology and development of ornithischian dinosaur Changchunsaurus parvus in the mid-Cretaceous period. The research, led by a team at Jilin University, revealed the presence of wavy enamel, which is the phylogenetically earliest occurrence of this type of tissue, according to Chen Jun, director of the team. This is the first time that such a structure has been found. China News Service

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