. Bulletin of the British Museum (Natural History), Geology. AFRICAN PLIO-PLEISTOCENE log Table i6 Weights of two parts of M. tibialis anterior and of the two major peronei (in grammes, after dissection and uniform saturation in io% formahn) Tibialis anterior Major part Abductor hallucis longus Total Peronei P. longus P. brevis Total P. longus as % of total peronei as % of Tib. ant, as % of gelada Papio I Mandrillus sphinx 8-5 14-0 19-5 1-5 3-0 7-5 lO'O lyo 27-0 4-5 8-0 20'0 5-0 4-0 6-5 9-5 I2*0 26-5 47-4 66-6 75-5 I5-0 17-6 27-8 33-3 37-5 37-5 the 'li
. Bulletin of the British Museum (Natural History), Geology. AFRICAN PLIO-PLEISTOCENE log Table i6 Weights of two parts of M. tibialis anterior and of the two major peronei (in grammes, after dissection and uniform saturation in io% formahn) Tibialis anterior Major part Abductor hallucis longus Total Peronei P. longus P. brevis Total P. longus as % of total peronei as % of Tib. ant, as % of gelada Papio I Mandrillus sphinx 8-5 14-0 19-5 1-5 3-0 7-5 lO'O lyo 27-0 4-5 8-0 20'0 5-0 4-0 6-5 9-5 I2*0 26-5 47-4 66-6 75-5 I5-0 17-6 27-8 33-3 37-5 37-5 the 'living' series) could be interpreted as a greatly enlarged tubercle of insertion of tibialis anterior (proper). The selectional advantage of a long and powerful hallux, and long pedal digits, to animals which habitually run along and climb branches is not difficult to find. In branch-running the transverse base of the animal is always narrow, so that the weight-line is easily displaced outside it. When this happens, a powerful turning Mtt Mtt. V. Fig. 30. Diagram of dorsal aspect of right tarsus, showing arrangement of tendons of Mm. tibialis anterior (), abductor hallucis longus (), peroneus longus (), and peroneus brevis (), and their insertions. Mtt. I = Hallucal metatarsal; Mtt. V = Fifth 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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