FIGURE 4 in Identification of type materials of the species of Protypotherium Ameghino, 1885 and Patriarchus Ameghino, 1889 (Notoungulata: Interatheriidae) erected by Florentino Ameghino

FIGURE 4. Patriarchus leptocephalus, holotype MACN-A 3989, incomplete skull, in ventral (A) and dorsal (B) views. Patriarchus altus, holotype MACN-A 4001, incomplete skull, in ventral (C) and dorsal (D) views. Patriarchus icochiloides, holotype MACN-A 4021, right maxillary fragment with alveolus of P1 and P2–M3, in occlusal view (E); holotype MACN-A 4022, right mandibular fragment with alveoli of p2–3 and p4–m3, in occlusal view (F). Scale bar = 10 mm.