(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.

Fig. 3. Intervertebral movements of the `tailless' pika Ochotona rufescens
(A) and the `long-tailed' gray short-tailed opossum Monodelphis
domestica (B) after Fast-Fourier Transformation. The different presacral
intervertebral joints (PS) are indicated by different colors. The footfall
pattern of the hindlimbs is indicated by the ground contact duration (stance
phase) on the top of each diagram. Note the different ranges of `pelvic
movement' of the species.