SEPS:PRISM | M. R. Dwyer P01_Reference_Shape_PCA We recompute generalized Procrustes alignment and PCA from Westfall et al. (2019), Supporting Information S1 and S2. Both configurations carrying the ambiguous printed ID 29402_A_PytMol are excluded. Circles are configurations; diamonds are host means. Codes use the first two letters of each binomial component. AgCo denotes Agkistrodon conanti, interpreted from the southern Florida sampling locality; the source reports Agkistrodon piscivorus. The code dictionary preserves original labels. Clusters and PCA axes do not establish species identity. Source: Westfall et al. 2019 S1 S2 Status: public secondary analysis