See interesting pictures and short movies about different species at:

X-ray Reconstruction of Moving Morphology (XROMM) is a 3D imaging technology for visualizing rapid skeletal movement in vivo.

XROMM combines 3D models of bone morphology with movement data from biplanar x-ray video to create highly accurate (▒0.1 mm) re-animations of the 3D bones moving in 3D space.
Rapid bone motion, such as during bird flight, frog jumping, and human running, can be visualized and quantified with XROMM.