Fig. 1 in Earliest Eutherian Ear Region: A Petrosal Referred to Prokennalestes from the Early Cretaceous of Mongolia

Fig. 1. Three views of right petrosal referred to Prokennalestes trofimovi, PSS­MAE 136. A, D, Ventral view. B, E, Dorsal view. C, F, Lateral view. Given that the petrosal is both isolated and incomplete, providing the precise orientation for the bone in the complete skull is difficult. One estimate is shown here. Scale = 1 mm.