Abstract
Recent work on the wrist joints of modern anthropoids has uncovered qualitative differences between the fully quadrupedal Cercopithecoidea and the non-quadrupedal Hominoidea. These findings are here related to a reconsideration of casts of the Dryopithecus (Proconsul) africanus wrist and inferior radioulnar joints. It is consluded that D. africanus was quadruped in much the same sense as are the modern cercopithecoid monkeys. The “dental ape” nature of D. africanus is considered to be perfectly consistent with the time and cladistic frameworks provided by recent molecular data.
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