TABLE 1. Component loadings for the Principal Components Analysis of skull shape in Spinosaurus and other reptiles shown in Figure 2.
| PC1 | PC2 | PC3 | PC4 | PC5 | |
| Skull height | 0.010 | 0.005 | 0.035 | 0.979 | -0.202 |
| Skull width | 0.002 | -0.006 | 0.003 | 0.202 | 0.979 |
| Naris to anterior margin | 0.015 | 0.002 | 0.999 | -0.035 | 0.004 |
| Naris to dorsal margin | 0.970 | -0.242 | -0.014 | -0.009 | -0.001 |
| Orbit to dorsal margin | 0.242 | 0.970 | -0.006 | -0.006 | 0.007 |
