Means of the thoracic indices at all decisternal levels of the four hominoids, the four arboreal quadrupedal New World monkeys, and the four terrestrial quadrupedal Old World monkeys included in this study. Also shown were the results of Mann-Whitney tests comparing the species means ( for the comparison between hominoids and the arboreal quadrupedal New World monkeys; for the comparison between the arboreal quadrupedal New World monkeys and the terrestrial quadrupedal Old World monkeys).
