In terms of their body plan, Old World monkeys — a group that includes primates like baboons and macaques — are generally considered more similar to ancestral species than apes are. But a new study suggests that as far as locomotion goes, apes and Old World monkeys each evolved a way of moving that was different from the ancestral species as they adapted to different niches in their environments.
Click here for original story, Fossil suggests apes, old world monkeys moved in opposite directions from shared ancestor
Source: ScienceDaily