Table 1. Likelihood ratios test comparing two models for character evolution of trophic morphologies and food resource use (diet).

Hypothesis	LJM	PB	PTS	PTR	MP	Diet
ln(likelihood H0)	−38.82±0.89	−38.60±0.74	−34.44±0.69	−15.65±0.49	−34.10±1.17	−52.95±1.10
ln(likelihood H1)	−38.73±0.88	−37.43±0.56	−33.73±0.46	−15.51±0.48	−33.84±1.12	−49.57±1.06
LR test	0.18	2.34	1.42	0.28	0.52	6.76
P	0.67	0.13	0.23	0.56	0.47	0.009

Mean values ± standard deviations are shown. H₀ is the one-parameter model, in which forward = backward. Morphological characters and character coding used in this study: LJM, lower jaw morphology; PB, shape of the pharyngeal bones; PTS, shape of the pharyngeal teeth; PTR, pharyngeal teeth rows; MP, mouth position.