. Breviora. BREVIORA No. 282 of P. jonesi yet collected. The anterior surface is not steep, form- ing an angle of approximately 45' with the lower border of the horizontal ramus. The two ridges that converge upward toward each of the median incisors are not very prominent; they enclose a shallow, median depressed area that extends dorsally from the foramen symphyseosum. Between the posterior portion of the ridge, below, and the anterior alveolus of P;., above, is a small,. Fig. 1. Parapapio jonesi Broom. Field no. 122-66K. Dorsal view of incomplete mandible of male. X 1- rather rugose depressi
. Breviora. BREVIORA No. 282 of P. jonesi yet collected. The anterior surface is not steep, form- ing an angle of approximately 45' with the lower border of the horizontal ramus. The two ridges that converge upward toward each of the median incisors are not very prominent; they enclose a shallow, median depressed area that extends dorsally from the foramen symphyseosum. Between the posterior portion of the ridge, below, and the anterior alveolus of P;., above, is a small,. Fig. 1. Parapapio jonesi Broom. Field no. 122-66K. Dorsal view of incomplete mandible of male. X 1- rather rugose depression. Apart from this, the anterior surface is only slightly roughened. The incisal shelf slopes very gently down- ward from the incisor alveoli to a point opposite about the middle of P;j. The symphysis terminates at the level of the anterior end of P4; there is no mental spine. The ascending ramus arises a little. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. , Museum of Comparative Zoology, Harvard University
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