Plate 6 SKULLS OF MESOPLODON STEJNEGERI
Fig. 1. Mesoplodon stejnegeri. Type-skull. Immature. Cat. No. 21112, U.S.N.M. Ventral aspect. ¼ nat. size.
Edges abraded; tip of beak, pterygoids, zygomatic processes, etc., defective.
2. Mesoplodon stejnegeri. Skull. Adult. Cat. No. 143132, U.S.N.M. Ventral aspect. About ¼ nat. size.
Pterygoids and left malar defective.