Ancient teeth hint at canoodling between early human relatives
Associated Press
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This undated image provided by the Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences shows an ancient tooth found at the Zhoukoudian archaeological site in eastern China. (Kai Zhou/Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences via AP)This undated image provided by the Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences shows an ancient tooth found at the Sunjiadong archaeological site in China. (Kai Zhou/Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences via AP)This undated image provided by the Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences shows an ancient tooth found at the Sunjiadong archaeological site in China. (Kai Zhou/Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences via AP)This undated image provided by the Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences shows an ancient tooth found at the Hexian archaeological site in eastern China. (Kai Zhou/Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences via AP)
This undated image provided by the Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences shows an ancient tooth found at the Zhoukoudian archaeological site in eastern China. (Kai Zhou/Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences via AP)