. Bulletin of the Department of Geology. Geology. 490 University of California Publications in Geology [Vol. 10 In size and shape the cave specimen (fig. 7) corresponds closely to teeth of ill. harlani from Rancho La Brea. The latter from the asphalt beds shows some range of variation in shape, snch variation easily including the stage indicated by the first inferior tooth in the type specimen. Curvature of the crown, inward twisting of the lower portion on the long axis of the tooth, and anterior and posterior beveling of the triturating surface are characters common to both forms. The tooth
. Bulletin of the Department of Geology. Geology. 490 University of California Publications in Geology [Vol. 10 In size and shape the cave specimen (fig. 7) corresponds closely to teeth of ill. harlani from Rancho La Brea. The latter from the asphalt beds shows some range of variation in shape, snch variation easily including the stage indicated by the first inferior tooth in the type specimen. Curvature of the crown, inward twisting of the lower portion on the long axis of the tooth, and anterior and posterior beveling of the triturating surface are characters common to both forms. The tooth from Hawver Cave and no. 21453 from Rancho La Brea possess residual patches of cement enclosing the outer layer of dentine, and in both specimens the concentric undulating lines on the surface of the dentine are plainly Fig. 7. Mylodon harlani Owen. First inferior tooth, no. 19891, outer view, X Vo- Pleistocene of Hawver Cave, near Auburn, California. Figs. 8a and 8b. Mylodon harlani Owen. Phalanx 2, digit 2, manus, no. 19892, X V-2- Pleistocene of Hawver Cave, near Auburn, California. Fig. 8a, lateral view; fig. 8b, superior view. Figs. 9a and 9b. Mylodon harlani Owen. Phalanx 2, digit 3, pes, no. 19893, X Vo. Fig. 9a, superior view; fig. 9b, lateral view. Pleistocene of Hawver Cave, near Auburn, California. Figs. 10a and 10b. Megalonyx{?), sp. Second phalanx, no. 19863, X %• Fig. 10a, superior view; fig. 10b, view of distal trochlea. Pleistocene of Hawver Cave, near Auburn, 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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