Grine F E
Scanning Microsc. 1987 Jun;1(2):647-56.
Quantitative analysis of microwear features preserved on the occlusal surfaces of the M2s of southern African specimens of Australopithecus and Paranthropus (the so-called 'gracile' and 'robust' australopithecines) reveals that there is no striking relationship in either taxon between occlusal facet inclination and the incidence of wear features. Within each taxon, Phase I and Phase II facets tend to differ in a similar manner in the total number of wear features, the percentage frequency of pitting, and in the orientation of wear scratches. Nevertheless, Paranthropus molars tend to display significantly greater numbers of microwear features on both Phase I and II facets than do Australopithecus homologues, and Paranthropus molars also evince significantly higher proportions of occlusal pitting on these surfaces. Paranthropus and Australopithecus crowns also differ significantly in the degree by which the occlusal wear scratches vary in their orientation. On each facet, Australopithecus tooth scratches display a greater degree of directional similarity. The differences between the Phase I and Phase II facets of Australopithecus and Paranthropus M2s suggest that the dietary items involved in the production of these observed patterns differed also. The diets of these Plio-Pleistocene hominids appear to have been qualitatively dissimilar.
对南非南方古猿和傍人（即所谓的“纤细型”和“粗壮型”南方古猿）M2磨牙咬合面保存的微痕特征进行定量分析后发现，在这两个分类单元中，咬合面小平面倾斜度与磨损特征发生率之间均不存在显著关系。在每个分类单元内，第一阶段和第二阶段小平面在磨损特征总数、麻点百分比频率以及磨损划痕方向上的差异方式相似。然而，傍人的磨牙在第一阶段和第二阶段小平面上显示出的微痕特征数量往往比南方古猿的同类磨牙多得多，而且傍人的磨牙在这些表面上的咬合面麻点比例也明显更高。傍人和南方古猿的牙冠在咬合面磨损划痕方向的变化程度上也存在显著差异。在每个小平面上，南方古猿牙齿划痕的方向相似程度更高。南方古猿和傍人M2磨牙第一阶段和第二阶段小平面之间的差异表明，产生这些观察到的模式所涉及的食物种类也有所不同。这些上新世-更新世原始人类的饮食在质量上似乎存在差异。
