Dental remains from Atapuerca-TD6 (Gran Dolina site, Burgos, Spain)

被引:110
作者
de Castro, JMB [1 ]
Rosas, A [1 ]
Nicolás, ME [1 ]
机构
[1] CSIC, Museo Nacl Ciencias Nat, E-28006 Madrid, Spain
关键词
Gran Dolina; Atapuerca; Lower Pleistocene; teeth;
D O I
10.1006/jhev.1999.0323
中图分类号
Q98 [人类学];
学科分类号
030303 ;
摘要
A descriptive and comparative study of the human dental remains recovered from level six (Aurora stratum) of the Gran Dolina (TD) site, Sierra de Atapuerca, northern Spain, is presented. The TD6 dental sample consists of two deciduous and 28 permanent teeth, belonging to a minimum of six individuals. Paleomagnetic analyses of the TD sequence suggest an age for the Aurora stratum of greater than 780ka. The associated fossil macro- and micrommals are consistent with a date for the Atapuerca-TD6 hominids at the end of the Early Pleistocene. As a whole, the size of the TD6 teeth is large and comparable to that of the African Lower Pleistocene hominids. Most morpholoscal dental traits are plesiomorphic for the genus Homo, whereas the shape analysis has revealed some size-related trends that differ from those seen in early Homo. Thus, the relative size increase of the maxillary and mandibular anterior teeth and buccolingual diameter of the first molars, the reduction of the third molars and lower canines, and the P-3>P-4 size sequence are all characteristic of the population represented by the TD6 hominids. The morphological evidence suggests that the TD6 hominids are closer to African Lower and early Middle Pleistocene hominids than they are to European Middle Pleistocene hominids. However, some dental traits of the TD6 hominids, such as the expansion of the anterior teeth, the P-3>P-4 size sequence, and the morphology of the lower canine also suggest an evolutionary continuity between the population represented by these hominids and the European Middle Pleistocene population. Furthermore, dental evidence indicates that the TD6 hominids are clearly distinct from Asian H. erectus. Dental evidence also suggests that the TD6 hominids could represent an evolutionary connection between H. ergaster and H. heidelbergensis. (C) 1999 Academic Press.
引用
收藏
页码:523 / 566
页数:44
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