. Bulletin of the Department of Geology. Geology. 300 University of California Publications. [Geology. Figs. 78a and 78b. Ilingoceros alexandrae Merriam. Fragment from the distal region of horn. No. 11886, X %. Thousand Creek Beds, Thousand Creek, Nevada. Fig. 78«, lateral view showing spiral; fig. 78b, cross-section of horn. Fig. 79. Ilingoceros alexandrae Merriam. Posterior view of base of ' left horn-core; a, spiral ridge arising over the postero-superior region of the orbit; s, cross-section of horn-core. No. 11880, type specimen, natural size. Thousand Creek Beds, Thousand Creek, Nevada.
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. Bulletin of the Department of Geology. Geology. 300 University of California Publications. [Geology. Figs. 78a and 78b. Ilingoceros alexandrae Merriam. Fragment from the distal region of horn. No. 11886, X %. Thousand Creek Beds, Thousand Creek, Nevada. Fig. 78«, lateral view showing spiral; fig. 78b, cross-section of horn. Fig. 79. Ilingoceros alexandrae Merriam. Posterior view of base of ' left horn-core; a, spiral ridge arising over the postero-superior region of the orbit; s, cross-section of horn-core. No. 11880, type specimen, natural size. Thousand Creek Beds, Thousand Creek, Nevada. Fig. 80. Ilingoceros, form B. Posterior to postero-median view of basal portion of right horn-core; a, anterior spiral ridge probably corresponding to ridge a in figure 79; b, median or lateral spiral ridge; c, posterior spiral ridge; s, cross-section of horn-core. No. 11892, natural size. Thousand Creek Beds, Thousand Creek, Nevada.. 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 work.. University of California, Berkeley. Dept. of Geology. Berkeley : The University Press