Conway, G. C., Vannier, M. W., and Tobias, P. V., 1990, Endocranial features of Australopithecus africanus revealed by 2- and 3-D computed tomography: Science, v. 247, p. 838.

Gould, S. J., and Vrba, E. S., 1982, Exaptation - a missing term in the science of form: Paleobiology, v. 8, p. 4-15.

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