. Bulletin of the Department of Geology. Geology. 1913] Stock: Nothrotherium and Megalonyx 349 The foramen magnum is moderately large and subeircular in outline. The superior margin is notched at the middle. In N. escrivanense this border is entire. The occipital condyles are similar to those of the Brazilian species, having their larger articular face directed outward and Figs. 6, 7, and 8. Nothrotherium graciliccps, n. sp. Bight second superior tooth, no. 10485, X %. Rancho La Brea Beds. Fig. 6, view of triturating surface; fig. 7, posterior view; fig. 8, lateral view. Dentition.—A
. Bulletin of the Department of Geology. Geology. 1913] Stock: Nothrotherium and Megalonyx 349 The foramen magnum is moderately large and subeircular in outline. The superior margin is notched at the middle. In N. escrivanense this border is entire. The occipital condyles are similar to those of the Brazilian species, having their larger articular face directed outward and Figs. 6, 7, and 8. Nothrotherium graciliccps, n. sp. Bight second superior tooth, no. 10485, X %. Rancho La Brea Beds. Fig. 6, view of triturating surface; fig. 7, posterior view; fig. 8, lateral view. Dentition.—A single tooth, no. 10485 (figs. 6, 7, and 8) corre- sponds in section to the second alveolns of the right side. It differs from a similar tooth (no. 8702) of Nothrotherium sliastense from the Potter Creek Cave in lacking the cnrvature of the inner face. Its anterior face is longitudinally concave and broadly convex transversely. The posterior face is slightly concave transversely, and the lateral faces are furrowed. The triturating surface is deeply troughed transversely, especially toward the inner side. Measurements op Skull and Dentition Length of skull, anterior end of palate to posterior end of occipital condyles 300. mm. Length of palate, anterior end to post-palatine notch 131. Width of palate between second alveoli Greatest width of muzzle 71. Greatest width above orbits 102. Least width behind orbits Mastoid width above the stylohyal processes Vertical height of occiput from plane of basioccipital to lamb- doidal suture 83. Length of dental series, from anterior wall of first alveolus to posterior wall of last alveolus M-, no. 10485, anteroposterior diameter at triturating 13. M-, no. 10485, transverse diameter at triturating surface 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
Size: 1919px × 1302px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectgeology, bookyear1902
