. lO Figure 4G.—Ui)[5er canine of Dinoceras lucare, Marsh (No. 1038); male. h. lateral view, inner surface; b'. outline of section of tootli; b". section of tooth showing pulp cavity; c. front view of looth. FiGDUE 41.—Upper canine oi Dinoceras laticeps, Marsh (So. 1202); female, a. outer surface; b. inner surface ; b'. outline of sec ion ; c. front view. Figure 48.—Upper canhie of Tinocents hmgiceps, Marsh (No. 1256); female, a. outer surface; b. inner surface ; c. front view of looth. The dotted line on the teelli marks the position of the alveolar border, below wliich the tusk was expo
. lO Figure 4G.—Ui)[5er canine of Dinoceras lucare, Marsh (No. 1038); male. h. lateral view, inner surface; b'. outline of section of tootli; b". section of tooth showing pulp cavity; c. front view of looth. FiGDUE 41.—Upper canine oi Dinoceras laticeps, Marsh (So. 1202); female, a. outer surface; b. inner surface ; b'. outline of sec ion ; c. front view. Figure 48.—Upper canhie of Tinocents hmgiceps, Marsh (No. 1256); female, a. outer surface; b. inner surface ; c. front view of looth. The dotted line on the teelli marks the position of the alveolar border, below wliich the tusk was exposed. All the figures are one-foicrtli natural size. The The superior canines of Dinoceras are long, recurved, trenchant tusks. The crown is covered with enamel, and the I'oot extends upward into the base of the maxillary protuberance, or horn-core. When the animal is
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Keywords: ., bookcentury1800, bookdecade1880, booksub, booksubjectpaleontology
