Fig. 6. Ordination morphospace of the first two axes returned by the principal components analysis.

Points are coloured according to relative skull width. This demonstrates the relationship between PC1 and body size, with larger taxa having higher PC1 scores. Note the colour gradient is not fully continuous along the x-axis, indicating taxa with disproportionately wide or narrow skulls. Notable taxa are indicated: (a) is the smallest taxon in the dataset, Knoetsuchkesuchus guimarotae; (b) Razandrongobe sakalavae, the largest notosuchian; (c) Crocodylus thorbjarrsoni, the largest crown crocodylid; (d) Purussaurus brasiliensis, the largest crown alligatorid; (e) Machimosaurus, the largest thalattosuchian and (f) Sarcosuchus imperator, the largest pseudosuchian.