. Bulletin of the Department of Geology. Geology. 130. 131 Figs. 130, 131. FPlioMppus osborni, subform A. Lower cheek teeth. Fig. 130, two premolars and one molar associated, no. 23286, referred specimen, occlusal view, X 1. Fig. 131, P; to M5, no. 23510, type, occlusal view, X 1; outer view, X Eden beds, California. Measurements of P. osborni, subform A No. 23510 No. 23286 Pj Mi M5 Mi Anteroposterior diameter of crown mm. mm. mm. Transverse diameter of crown mm. Anteroposterior length of pillar 15 Discussion.—Except for the suggested sharpness
. Bulletin of the Department of Geology. Geology. 130. 131 Figs. 130, 131. FPlioMppus osborni, subform A. Lower cheek teeth. Fig. 130, two premolars and one molar associated, no. 23286, referred specimen, occlusal view, X 1. Fig. 131, P; to M5, no. 23510, type, occlusal view, X 1; outer view, X Eden beds, California. Measurements of P. osborni, subform A No. 23510 No. 23286 Pj Mi M5 Mi Anteroposterior diameter of crown mm. mm. mm. Transverse diameter of crown mm. Anteroposterior length of pillar 15 Discussion.—Except for the suggested sharpness of the gutter of the metaconid-metastylid pillar, the teeth in the flatness of their inner faces and the great anteroposterior extension of the metaconid- metastylid would indicate the presence of an Hipparion form. This elongation of the metaconid-metastylid column of the new teeth is shown in comparison to that occurring in hipparions from the Rattle- snake and Ricardo Pliocene, as well as in Merychippus and Pliohippus in the following table. so Eipparion and Merychippus data through the kindness of Professor John C. 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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