Using the statistical framework of geometric morphometrics one can track the evolutionary changes within species. This image is taken from the system that tracks multiple points models of the skull of a family of monkeys, and the model is used to create intermediate structures that can be used to verify hypotheses about shape changes over time.
David Wiley, Nina Amenta, Dan Alcantara, Deb Ghosh, Yong Kil, and many others, 2008
