Table 2.

Variance of habitat explained by phenotypic characters (body size and bone microanatomical characters) and phylogenetic position (represented by phylogenetic principal coordinates)

	Parameters that reflect the lifestyle, selected by a backward -elimination procedure: LN(PLg), Max, Cp				Parameters that reflect the lifestyle, selected by a forward-selection procedure: PLg, Minrad, Min
	LS 3 states	P-value	LS 2 states	P-value	LS 3 states	P-value	LS 2 states	P-value
a	0.2342	0.0026 (iv)	0.3496	0.0003 (i)	0.2314	0.0036 (vi)	0.2842	0.0016 (iii)
b	0.0233		0.0868		0.0482		0.1115
c	0.0662	0.4067 (9)	0.0863	0.2711 (7)	0.0413	0.624 (15)	0.0616	0.4455 (11)
d	0.6763		0.4773		0.6791		0.5427

Habitat is treated as the dependent variable and some parameters (selected by either a backward-elimination or a forward-selection procedure) and the three first principal coordinates as independent variables. Arabic numbers in parentheses next to the probabilities indicate the rank in the family of tests of phylogenetic signal; Roman numbers in parentheses indicate rank in the family of tests of ecological signal (see Table 5). a, Fraction related to phenotype (body size and bone microanatomy); b, fraction related to phenotype and phylogeny; c, fraction related to phylogeny; d, residual variation (unexplained fraction). Abbreviations as in Table 1.