English: PLATE VIII.

• Fig. 1. Left lower jaw of Stylacodon gracilis, Marsh ; outer view.
• 2. Left lower jaw of Dryolestes priscus, Marsh ; inner view.
• 3. Left lower jaw of Dryolestes vorax. Marsh ; outer view.
• 4. The same jaw; inner view.
• 5. Left lower jaw of Laodon venustus. Marsh ; inner view.
• 6. Left lower jaw of Asthenodon segnis. Marsh ; anterior part, outer view.
• 7. Eight lower jaw of same species ; outer view.

a, canine ; b, condyle ; c, coronoid process ; d, angle ; g, mylohyoid groove ; s, symphyseal surface.

All the Figures are three times natural size, except Figure 5, which is four times natural size.