All living New World monkeys have three premolar teeth in each quadrant of their mouth. New World monkeys may have derived from Old World anthropoids during the Oligocene from Africa. Which of the following Old World anthropoids has a dental formula of 2, 1, 3, 3/2, 1, 3, 3 and therefore, could potentially be ancestral to New World monkeys?
a. Australopithecus
b. Sivapithecus (a sivapithecine)
c. Homo
d. Proconsul (a proconsuline)
e. Apidum (a parapithecine)