TABLE 2. F-test for equal variance.

	Species	Measurement	f	P(F<=f)	f-critical
	Paramylodon harlani	Length	1.09	0.35	1.48
		Width	1.85	0.01	1.52
		Depth	2.86	<0.001	1.52

	Smilodon fatalis	Length	1.68	<0.001	1.18
		Width	1.67	<0.001	1.18
		Depth	1.13	0.11	1.18

	Panthera atrox	Length	1.59	0.03	1.5
		Width	1.9	0.003	1.5
		Depth	1.23	0.2	1.5

	Bison antiquus	Length	1.44	0.04	1.42
		Width	1.72	0.005	1.42
		Depth	1.86	0.002	1.42

	Equus occidentalis	Length	2.15	<0.001	1.38
		Width	1.11	0.30	1.38
		Depth	3.95	<0.001	1.38

	Camelops hesternus	Length	0.57	0.037	1.58
		Width	1.39	0.11	1.58
		Depth	1.31	0.17	1.58