Hanging lemurs are not walking
Channel: The Company of Biologists
Date: 2016-01-07

When lemurs sling themselves beneath a tree branch and move along on all fours it looks as if they are walking. But now a team of scientists from Duke University, USA, show that this inverted form of motion is far from walking and could represent an intermediate motion that eventually allowed some primates to begin swinging through the trees by their arms. 

The original research can be found at http://jeb.biologists.org/content/219/1/53.