Advanced dental reduction in Javanese Homo erectus

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The postcanine tooth crowns of late Early Pleistocene <i>Homo erectus</i> from Sangiran, Java, have been considered to be significantly smaller than those of older <i>H. erectus</i> remains of the same region. In this study, the degree of dental reduction in the former was examined by comparing their postcanine crown size with that of various regional groups of recent <i>H. sapiens</i>. The results show that overall crown size and degree of posterior molar reduction of Javanese <i>H. erectus</i> of the late Early Pleistocene was within the range of variation of recent <i>H. sapiens</i>. The position of this <i>H. erectus</i> group in the general trend of dental reduction in Early to Middle Pleistocene Asian archaic <i>Homo</i> is discussed. Implications for the phylogenetic discontinuity hypothesis between <i>H. erectus</i> and <i>H. sapiens</i> in Australasia are presented. In contrast to their reduced crown size, the Javanese <i>H. erectus</i> remains exhibit robust root systems, presumably a primitive retention. This observation indicates that reduction in crown size preceded reduction of the roots during evolution of <i>Homo</i>, at least in the Sunda region.<br>

収録刊行物

  • Anthropological science : journal of the Anthropological Society of Nippon  

    Anthropological science : journal of the Anthropological Society of Nippon 114(1), 35-43, 2006-04-01 

    The Anthropological Society of Nippon

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各種コード

  • NII論文ID(NAID)
    10018120492
  • NII書誌ID(NCID)
    AA10915022
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09187960
  • NDL 記事登録ID
    7883948
  • NDL 雑誌分類
    ZS1(科学技術--人類学)
  • NDL 請求記号
    Z54-J370
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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