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Biomechanical Consequences of Rapid Evolution in the Polar Bear Lineage

Figure 2

Performance metrics assessed for four different bite positions in the polar bear (blue symbols) and brown bear (red symbols) FE models.

The X axis corresponds to bite point, with anterior bites towards the left and posterior bites to the right. Panel A shows bite forces, panel B shows cranial strain energy. Note that bite forces are similar in both species for all bites, while strain energies are uniformly lower in the brown bear.

Figure 2