Fig. 103. Upper molar 1 of the left side—
natural size, after Ameghino.
The measurements of the complete pair of lower jaws which we found are
| Lower dentition, | length from inc. 1 to m. 3 | 455 mm. | |||
| Lower dentition, | incisor 2, | length | 22 mm., | width | 22 mm. |
| Lower dentition, | canine, ant. post. diam. at alveolus | 52 mm. | |||
| Lower dentition, | canine, trans. diam. at alveolus | 26 mm. | |||
| Lower dentition, | diastema from c. to pm. 3 | 116 mm. | |||
| Lower dentition, | premolar 4, | length | 28 mm., | width | 26 mm. |
| Lower dentition, | molar 1, | length | 43 mm., | width | 28 mm. |
| Lower dentition, | molar 2, | length | 58 mm., | width | 32 mm. |
| Lower dentition, | molar 3, | length | 70 mm., | width | 36 mm. |
| Height of mandible under molar 3 | 83 mm. | ||||
The scapula is a very long heavy bone, with a narrow blade, and a high spine which has its upper margin thickened so as to appear like a banister rail. We found one complete scapula and a second incomplete one associated with it, which corresponded in all ways to the first one.
Fig. 104. Lower jaws—
⅕ natural size.
Fig. 105. Dorsal view
of right scapula—
⅕ natural size.
