Fig. 6. Dietary classification of early dinosaurs.

Decision boundary plots from biomechanical (A) and morphological (C) datasets showing morphospace areas assigned to each dietary category by the best-performing algorithm (naïve Bayes and neural network, respectively). The predictor variables (PCs) with the highest importance in each model are represented. Symbols in gray indicate the dietary category of extant sauropsids, and symbols in black indicate the predicted category of dinosaurs. Dietary class probabilities and predictions for early dinosaurs from biomechanical (B) and morphological (D) data. Colored bars show class probabilities, and symbols indicate the predicted dietary category.