. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. DIVISADERO LARGO MAMMALIAN FAUNA 251 The upper premolars, P3 4, of No. 45930 are too poorly preserved for useful description except to note that their squared lingual contours suggest the presence of well developed hypocones, perhaps as in Diadiaphorus. The presumed deciduous upper molars and the permanent molars have strongly W-shaped ectolophs. Details of structure are reasonably well shown only on M2 of the type, but as far as preserved in the hypodigm M1 and M3 seem to be essentially similar except for ex
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. DIVISADERO LARGO MAMMALIAN FAUNA 251 The upper premolars, P3 4, of No. 45930 are too poorly preserved for useful description except to note that their squared lingual contours suggest the presence of well developed hypocones, perhaps as in Diadiaphorus. The presumed deciduous upper molars and the permanent molars have strongly W-shaped ectolophs. Details of structure are reasonably well shown only on M2 of the type, but as far as preserved in the hypodigm M1 and M3 seem to be essentially similar except for expectable differ- ences of proportions. On M2 a strong anterior cingulum runs posterolingually from the ectoloph, ending in a cusplike projec- tion anterior to the protocone. There is a sulcus between this cingulum, the protoconule, and the protocone, but no closed 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. : The Museum
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