. Bulletin of the Department of Geology. Geology. 374 University of California Publications in Geology [Vol. 12 "Wortman's figure (fig. 20) of P. gracilis,^- and the apex of the suture line between the palatine and maxillary occurs opposite the anterior edge of Dp- versus that of M- as in P. gracilis. There is also an interesting suggestion of the maxillary fossa which is present in Pliauchenia gigas, Alticamelus,^^ and Camelops, but absent in Auchenia and Camelus. The second molar has not come into use, Dp- and Dp- still remain in place. and the deciduous molars are furnished with well d
. Bulletin of the Department of Geology. Geology. 374 University of California Publications in Geology [Vol. 12 "Wortman's figure (fig. 20) of P. gracilis,^- and the apex of the suture line between the palatine and maxillary occurs opposite the anterior edge of Dp- versus that of M- as in P. gracilis. There is also an interesting suggestion of the maxillary fossa which is present in Pliauchenia gigas, Alticamelus,^^ and Camelops, but absent in Auchenia and Camelus. The second molar has not come into use, Dp- and Dp- still remain in place. and the deciduous molars are furnished with well developed and mesostyles, both being much more prominent than in the referred lower teeth. A cingulum crosses the inner extent of the posterior lobe of the first molar near the summit. Dp- is quadrate and 90a Fig. 89 to 006. Procamc'lus?, indet. sp. Fig. 89, anterior portions of pre- maxillaries with canines and incisors, no. 23430; figs. 90o, 90b, incisors, no. 1053; ' X 1. Eden beds, California. Specimen no. 23434, from the same locality, represents a more mature stage, M^, M- being in place. The teeth are slighly heavier, otherwise similar to those of the preceding specimen. Measurements of No. 23434 Ml, anteroposterior diameter mm. Ml, transverse diameter 17 M-, anteroposterior diameter 21 M-, transverse diameter Specimen no. 23430 (fig. 89). The sharp, pointed premolars are recurved and caniniform. and greatly exceed the small canines in size. Long diastemas lie anterior and posterior to the canines, and are arched in the usual manner. The form apparently differs markedly from that described under Procamelus edensis raki, type specimen, 52 Wortman, Jacob L. The Extinct Camelidae of North America and Some Associated Forms. Bull. Am. Mus. Nat. Hist., vol. 10, fig. 20, p. 125, 1898. 58 Matthew, W. D., and Cook, Harold J. A Pliocene Fauna from Western Nebraska. Bull. Am. Mus. Nat. Hist., vol. 26, pp. 361-414, 1909. Merriam, John C. The Skull a
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