Table 5. Results of the Birth-Death Likelihood analysis based on fitting different diversification models to Cambarellinae and its containing groups (Gulf and Mexican Groups).

Group		pureBirth	BD	DDL	DDX	yule2rate
Cambarellinae	Parameters	r1 = 0.122	r1 = 0.053	r1 = 0.122	r1 = 0.064	r1 = 0.043
			a = 0.706	k = 476707.6	x = −0.297	r2 = 0.152
	Ln(L)	16.600	15.815	16.601	15.969	14.668
	AIC	−35.201	−35.631	−37.201	−35.939	−35.336
	ΔAIC	0	−0.430	−2	−0.738	−0.135
Gulf		r1 = 0.106	r1 = 0.088	r1 = 0.197	r1 = 0.127	r1 = 0.153
			a = 0.229	k = 12.126	x = −0.117	r2 = 0.059
						st = 4.116
	Ln(L)	12.101	12.089	11.783	12.083	11.395
	AIC	−26.202	−28.179	−27.567	−28.166	−28.791
	ΔAIC	0	−1.977	−1.365	−1.964	−2.589
Mexican		r1 = 0.174	r1 = 0.174	r1 = 0.276	r1 = 0.296	r1 = 0.210
			a = 0.0	k = 21.007	x = 0.283	r2 = 0.120
						st = 2.225
	Ln(L)	10.201	10.201	9.894	10.049	9.834
	AIC	−22.402	−24.402	−23.789	−24.096	−25.669
	ΔAIC	0	−2	−1.387	−1.694	−3.267

r = net diversification rate (speciation events per million years);

a = extinction fraction;

st = time of rate shift (MYA);

k = carrying capacity prameter;

x = rate change parameter;

Ln(L) = Log-Likelihood;

AIC = Akaike information criterion;

ΔAIC = change in AIC relative to pureBirth.