. Bulletin of the British Museum (Natural History), Geology. 88 CLASSIFICATION OF BABOONS transverse breadth between the lateral faces of the alveolae of the lower, lateral incisors is plotted against the combined length of the first two lower molars. The male canines are relatively smaller, and the 'sectorial' face of Pg shorter, in the larger-sized forms at each evolutionary stage. This effect becomes intensified in the course of evolution. Allomorphic trends in the dentition are thus directly opposite to those seen in Papio, in which the largest forms have relatively as well as absolutely t
. Bulletin of the British Museum (Natural History), Geology. 88 CLASSIFICATION OF BABOONS transverse breadth between the lateral faces of the alveolae of the lower, lateral incisors is plotted against the combined length of the first two lower molars. The male canines are relatively smaller, and the 'sectorial' face of Pg shorter, in the larger-sized forms at each evolutionary stage. This effect becomes intensified in the course of evolution. Allomorphic trends in the dentition are thus directly opposite to those seen in Papio, in which the largest forms have relatively as well as absolutely the largest canines, incisors and Pg. The mandibular ramus becomes relatively higher. This trend can only be traced from Kanjera/Olorgesailie to Olduvai IV, if indeed this is a time-series. Both allomorphosis and evolutionary development are probably involved, but the material is not sufficient to assess the importance of each. In either case, the trend is opposite. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
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