at the same time , the hand of chiropter is a highly specialized structure , that is evident from the presence of articular restricotrs of anterior sagging of the wrist , crests and grooves directing movements in a strictly definite plane , from fan-like spreading and bringing together the rays , from very long metacarpal bones and proximal phalanges , from reduction of distal phalangs of the 3d and 5th fingers .
C0018563
hand
C0016129
fingers