FIG. 27 in Mystacodon selenensis, the earliest known toothed mysticete (Cetacea, Mammalia) from the late Eocene of Peru: anatomy, phylogeny, and feeding adaptations

FIG. 27. — Mystacodon selenensis (MUSM 1917, holotype). A-C, right i2 or i3 (tooth I); D-F, left i3 or c (tooth II); G-I, right?p1 (tooth III); A, labial view; B, lingual view; C, occlusal view; D, labial view; E, lingual view; F, occlusal view; G, labial view, H, lingual view; I, occlusal view. Scale bar: 3 cm.