Archive image from page 60 of Dinocerata a monograph of Dinocerata : a monograph of an extinct order of gigantic mammals dinoceratamonogr00mars Year: 1886 THE LOWER JAW. 37 The coronoid process of the lower jaw in Dinoceras is large and elevated, somewhat curved backward, and pointed above (Plate VIII, fig-ure 1, cr). The angle of the jaw is rounded in outline, and projects downward somewhat below the main portion of the ramus. The dental foramen is large, and bounded above by a ridge, which extends upward and backward to the condyle. The mental foramen is of moderate size, and situated nea
Archive image from page 60 of Dinocerata a monograph of Dinocerata : a monograph of an extinct order of gigantic mammals dinoceratamonogr00mars Year: 1886 THE LOWER JAW. 37 The coronoid process of the lower jaw in Dinoceras is large and elevated, somewhat curved backward, and pointed above (Plate VIII, fig-ure 1, cr). The angle of the jaw is rounded in outline, and projects downward somewhat below the main portion of the ramus. The dental foramen is large, and bounded above by a ridge, which extends upward and backward to the condyle. The mental foramen is of moderate size, and situated near the base of the anterior pendent process. Figure 38.—Lower jaw witli upper canine in position of Tiaoceras lo/iyiceps, Msrsh (No. 1256), female; seen from the left. a. angle of jaw; c, upper canine tooth in its natural position; c'. lower canine tooth; cd. condyle; cr. coronoid process; d. diastema; p. process for protection of canine tusls. One-fourth natural size. In the genus Tinoceras, the same general characters of the lower jaws are seen. In the male, the pendent process is lai-ge and elongate, but less massive than in the genus Dinoceras, and its lower outline less regularly rounded (Plate XIX, figure 1, q:)). This corresponds with the position of the large upper canine tusk, which it protects. In the female of Tinoceras, the pendent ji'ocess is much reduced, its size in all cases corresponding to the size of the canine tusk above. In the female of Tinoceras longiceps (figure 38, above), the lower jaw is remarkably long- and slender, and the pendent process nearly obsolete.
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