Advanced dental reduction in Javanese Homo erectus

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Author(s)

Abstract

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>

Journal

  • Anthropological Science

    Anthropological Science 114(1), 35-43, 2006-04-01

    The Anthropological Society of Nippon

References:  47

Cited by:  2

Codes

  • NII Article ID (NAID)
    10018120492
  • NII NACSIS-CAT ID (NCID)
    AA10915022
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    09187960
  • NDL Article ID
    7883948
  • NDL Source Classification
    ZS1(科学技術--人類学)
  • NDL Call No.
    Z54-J370
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
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