TABLE 3. Results of t-tests assuming equal variances. T-tests Assuming Equal Variances Species Measurement t Stat t critical values P value Paramylodon harlani Length -5.92 1.65-1.97 <0.001 Smilodon fatalis Depth 37.18 1.64-1.96 <0.001 Equus occidentalis Width 25.11 1.65-1.97 <0.001 Panthera atrox Depth 18.07 1.65-1.97 <0.001 Camelops hesternus Length 10.40 1.66-1.98 <0.001 Camelops hesternus Width -1.82 1.66-1.98 0.07 Camelops hesternus Depth 0.42 1.66-1.98 0.33