. Elements of geology : a text-book for colleges and for the general reader. Geology. 462 MESOZOIC ERA—AGE OF REPTILES. Along with these huge animals lived also the smallest Dinosaurs yet known—one of them, Nanosaurus agilis, being about the size of a Fig. 745.—Pelvic arch of Morosaurus grandis (after Marsh), seen from in front. One sixteenth natural size: a, fii'st sacral vertebra; b, transverse process of first sacral vertebra; c, trans- verse process of second vertebra; p, fourth or last sacral vertebra; nc, neural canal; il, ilium; is, ischium; pb, pubis. The characteristics of these
. Elements of geology : a text-book for colleges and for the general reader. Geology. 462 MESOZOIC ERA—AGE OF REPTILES. Along with these huge animals lived also the smallest Dinosaurs yet known—one of them, Nanosaurus agilis, being about the size of a Fig. 745.—Pelvic arch of Morosaurus grandis (after Marsh), seen from in front. One sixteenth natural size: a, fii'st sacral vertebra; b, transverse process of first sacral vertebra; c, trans- verse process of second vertebra; p, fourth or last sacral vertebra; nc, neural canal; il, ilium; is, ischium; pb, pubis. The characteristics of these ancient reptiles have been worked out with great skill by Marsh, according to whom the vertebrae of many of them were full of large cavities, so as to make these enormous bones as light as possible. This character reached its highest expression in Coeluria of Marsh (Fig. 743). The American Dinosaurs were not only remarkable for size and number but also for their great variety of forms. According to Marsh, some of them were reptile-footed (Sauropoda), some beast-footed. 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 LeConte, Joseph, 1823-1901. New York : D. Appleton and Co.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectgeology, bookyear1892
