Figure 6.

Skull surface visualizations. Snapshots of CT-derived skull surfaces of mean control specimens and Spry2^−/− specimens from all three backgrounds, viewed from the lateral (left) and superior views (right). Each mean specimen (six in total) was created by identifying the CT-based skull surface of the specimen closest to the mean shape of inbred background controls or Spry2^−/− groups and morphing this surface to the actual mean Procrustes coordinates for that background/genotype. These images represent shape variation, but not size variation (i.e., images are not to scale). CT, computed tomography.