Fig. 2.

Morphospace occupation by ichthyosaurs. Plots are based on the first two axes from the principal coordinates analysis for each dataset: (A) whole-body characters; (B) cranial characters; and (C) postcranial characters. Taxa from the four time bins are distinguished by symbols, and minimal morphospace occupations by ichthyosaurs of each time bin are indicated by polygon outlines, differently colored for each time bin (red, Early–Middle Triassic; black, Late Triassic; blue, Early Jurassic; green, Middle Jurassic–Cretaceous).