Orrorin tugenensis thumb- 360 degrees
I don't own this. I got it from
Almécija S, Moyà-Solà S, Alba DM (2010) Early Origin for Human-Like Precision Grasping: A Comparative Study of Pollical Distal Phalanges in Fossil Hominins. PLoS ONE 5(7): e11727
http://www.plosone.org/article/info:d...