Fig. 5
From: New insights into the first cervical vertebrae of Otavipithecus and Nacholapithecus

Quantitative analysis of shape variation in partial atlases. Principal component analysis (PCA) of the Procrustes-registered shape coordinates of the partial atlas morphology calculated for GSN BA 104’91 and KNM-BG 35250BE, and comparative extant primates for PC1, PC2 (a) and PC3 (b) using 9 selected landmarks. Shapes at the extremes of the axes illustrate morphological variation trends along each component in superior and posterior views. Figure generated with RStudio 1.4.1106.