. Bulletin of the Department of Geology. Geology. 1912] Kellogg: Pleistocene Rodents of California 155 GASTOE SUBAUEATUS Taylor Castor occurs in Samwel Cave only, and is represented by three upper molars, right M1, left M2, and right M3. A new species, Castor subauratus* has recently been de- scribed from the San Joaquin Valley, California, and although. Fig. 1. Castor subauratus. Eight M1, posterior view, no. 19508. Fig. 2. Castor subauratus. Eight M1, occlusal view, no. 19508. Fig. 3. Castor subauratus. Eight M3, occlusal view, no. 17318. Fig. 4. Castor subauratus. Left M2, occlusal view, no
. Bulletin of the Department of Geology. Geology. 1912] Kellogg: Pleistocene Rodents of California 155 GASTOE SUBAUEATUS Taylor Castor occurs in Samwel Cave only, and is represented by three upper molars, right M1, left M2, and right M3. A new species, Castor subauratus* has recently been de- scribed from the San Joaquin Valley, California, and although. Fig. 1. Castor subauratus. Eight M1, posterior view, no. 19508. Fig. 2. Castor subauratus. Eight M1, occlusal view, no. 19508. Fig. 3. Castor subauratus. Eight M3, occlusal view, no. 17318. Fig. 4. Castor subauratus. Left M2, occlusal view, no. 19507. Fig. 5. Sciurus g. fossilis, n. subsp. Eight lower mandible, no. 19506. Fig. 6. Lepus a. Idamathensis. Left lower mandible, no. 9575. Figs. 1 to 6 natural size. the specific differences do not include any points in regard to the teeth as separating it from C. pacificus, the more northern form, it is probable that these three molars belong to the Cali- fornia species. Mr. Taylor considers C. subauratus to be a long- isolated form and one which crossed the mountain barrier from the north. The Shasta region is the known northern limit of the species. CITELLUS BEECHEYI DOUGLASI (Eichardson) A number of specimens of this ground-squirrel were found in both Potter Creek and Samwel caves at depths of from one inch to ten feet. All are lower jaws with the exception of frag- ments of two skulls, found one in each of the caves. No differ- * Taylor, W. P., '' The Beaver of West Central California,'' Univ. Calif. Publ. Zool., vol. 10, p. 167 (1912).. 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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