Table 2. Shape changes by cranial region in each of the ecological gradients significantly associated with cranial shape covariation.

Category abbreviations as in Table 1.

	Rostrum	Postorbital constriction	Cranial vault	Occipital region	Zygomatic arches
G1. Small to large	Deeper	Expanded	Narrower	Expanded	No change
FE1. Broad to narrow	Shorter	Expanded	Wider	No change	Wider
LH2. Early to late	Deeper	Narrower	Wider	Expanded	No change
EV1. Low to high	Longer	Narrower	Narrower	Expanded	Narrower
FE2. Consensus (herbivory)	Shorter	Narrower	Taller	Retracted	Wider
FE2. Consensus (omnivory)	Longer + deeper	Narrower	Wider	Expanded	Narrower
FE2. Consensus (carnivory)	Shorter	Expanded	Narrower	No Change	Wider