. The Deseado formation of Patagonia . Fig, 114. Lower dentition—1/5 natural size; edges of teeth broken off in my specimen are indicated in outline. Lower Dentition Specimen Ameghinos Gaudrys No. 3207 T VPE Specimen Incisor 2 to molar 3, le ng th 510 mm. 540 mm.* 415 mm.* Premolar 2 to molar 3, length 325 mm. 280 mm. 272 mm. Inc. 2, length above alveo lus i33 mm. 188 mm.* 168 mm.* Inc. 2, antero-posterior diam. 55 mm. 60 mm. 66 mm. Inc. 2, transverse diam 40 mm. 36 nun. 44 mm. Premolar 3, length 46 mm. 50 m m. 54 mm. Premolar 3, width 36 mm. 3r mm. 35 mm. PrenKjIar 4, length 55 mm. 45 mm. 5t&


. The Deseado formation of Patagonia . Fig, 114. Lower dentition—1/5 natural size; edges of teeth broken off in my specimen are indicated in outline. Lower Dentition Specimen Ameghinos Gaudrys No. 3207 T VPE Specimen Incisor 2 to molar 3, le ng th 510 mm. 540 mm.* 415 mm.* Premolar 2 to molar 3, length 325 mm. 280 mm. 272 mm. Inc. 2, length above alveo lus i33 mm. 188 mm.* 168 mm.* Inc. 2, antero-posterior diam. 55 mm. 60 mm. 66 mm. Inc. 2, transverse diam 40 mm. 36 nun. 44 mm. Premolar 3, length 46 mm. 50 m m. 54 mm. Premolar 3, width 36 mm. 3r mm. 35 mm. PrenKjIar 4, length 55 mm. 45 mm. 5t> mm. Premolar 4, width 46 mm. 45 mm. 47 mm. Molar I, length 65 mm. 50 mm. 51 mm. Molar I, width 59 mm. ■ 52 mm. 54 mm. Molar 2, length 73 mm. 5^^ mm. 66 mm. Molar 2, width 73 mm. 63 mm. 66 mm. Molar 3, length 69 mm. 67 mm. 71 mm. Molar 3, width 74 mm. 66 mm. 69 mm. Four cervical vertebrae were preserved with the skullnumber 3207, of which only about a third of the atlas isrepresented, but fortunately we found a complete atlasis


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