. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 370 BiiUetin Musctiiu of Comparative Zoology, Vol. 143, No. 6 80°. 35° 30° Figure 3. Outcrop map of Triassic formations in tlie Himalayas (from Geological Map of India, Geological Survey of India, 1957). this assemblage as a natural population, in which variations in sutures are no more than what one would expect. On Table 1 are listed the numbers of specimens of each species of Otoccnis Diener recognized in the Shalshal fauna. Of the 56 specimens of Otoceras, 31 were assigned to O. uood- icardi and only four specimen
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 370 BiiUetin Musctiiu of Comparative Zoology, Vol. 143, No. 6 80°. 35° 30° Figure 3. Outcrop map of Triassic formations in tlie Himalayas (from Geological Map of India, Geological Survey of India, 1957). this assemblage as a natural population, in which variations in sutures are no more than what one would expect. On Table 1 are listed the numbers of specimens of each species of Otoccnis Diener recognized in the Shalshal fauna. Of the 56 specimens of Otoceras, 31 were assigned to O. uood- icardi and only four specimens to O. fissi- scUatum, which has a small lobe in the first auxiliary saddle; O. draupadi, which has a small lobe in each of the first and second auxiliary saddles, is represented by five specimens, and O. clivei by only seven specimens. The sutures of the specimens assigned to species other than O. wood- icardi are no more than intraspecific vari- ants. Although presence or absence of a minor lobe in an auxiliarv saddle is con- spicuous, it does not necessarily represent a specific difference. This suggestion could, of course, only be tested by exami- nation of large population samples. The specimens of Otoceras recorded by von Krafft and Diener (1909) from Spiti are few in number and poorly preserved. All the localities that have yielded the Oto- ceras-Ophiceras fauna studied bv Diener (1897) and von Krafft and Diener (1909). 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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