. Bulletin of the Department of Geology. Geology. 18 University of California Publications. [Geology. Butte, Crook County, Oregon. X %. This is evidently a true Mesocyon near the coryphaeus type, possessing like that form both posterior cusp and basal tubercle on P3. The sectorial is nearly as large as in coryphaeus. P3 and P2 are relatively smaller. The palate is as wide posteriorly as in coryphaeus, and the width between the canines is also as great, but the palate of the typical coryphaeus is 15 to 20 per cent, longer. There is a moderate degree of crowding of the premolars anteriorly, in c
. Bulletin of the Department of Geology. Geology. 18 University of California Publications. [Geology. Butte, Crook County, Oregon. X %. This is evidently a true Mesocyon near the coryphaeus type, possessing like that form both posterior cusp and basal tubercle on P3. The sectorial is nearly as large as in coryphaeus. P3 and P2 are relatively smaller. The palate is as wide posteriorly as in coryphaeus, and the width between the canines is also as great, but the palate of the typical coryphaeus is 15 to 20 per cent, longer. There is a moderate degree of crowding of the premolars anteriorly, in contrast to the open arrangement in coryphaeus and josephi. The size of the brain case is relatively considerably greater than in the type of coryphaeus or in a specimen of the same general dimensions in our collection. M. josephi differs from this form in having a longer palate, a smaller superior sec- torial and first molar, and in lacking a posterior cusp on 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 University of California, Berkeley. Dept. of Geology. Berkeley : The University Press
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