Fig. 3From: Morphological disparity and structural performance of the dromaeosaurid skull informs ecology and evolutionary historyBoxplots of principal components. Boxplots generated from outlier tests of all four datasets. X-axis represents each of the principal components found in the datasets. Y-axis represents the PC scores. The black line in each of the box represents the median PC score of the individual PCs. The small circles on the graph represents the outliers in each PC and thus identify taxa with unusual skull shapeBack to article page