Table 2.

Effects of phylogeny, size, and ecology on whole-column morphology and individual vertebral positions

Vertebral Position	Phylogeny		Allometry		Ecology		Ecology2
	K	p-val.	Rsq	p-val.	Rsq	p-val.	Rsq	p-val.
Whole Column	0.63	0.001	0.12	< 0.001	0.09	0.012	0.08	0.032
First Thoracic	0.65	0.001	0.16	< 0.001	0.07	0.112	0.07	0.174
Mid Thoracic	0.72	0.001	0.14	< 0.001	0.08	0.086	0.08	0.066
Diaphragmatic	0.54	0.001	0.10	< 0.001	0.05	0.535	0.06	0.331
Second Lumbar	0.63	0.001	0.13	< 0.001	0.11	0.006	0.08	0.051
Final Lumbar	0.66	0.001	0.10	< 0.001	0.13	0.001	0.09	0.048

Phylogenetic signal was measured using the K-statistic. Allometry, ecology, and their interaction from a phylogenetic MANCOVA. Rsq R-squared value. P-val. p value, Ecology2 secondary ecology assignment used

Bold values indicate significance at the 0.05 alpha level