. The Cambridge natural history. Zoology. SAUROPODA 419. Fig. 96.—Front view of the pelvis oi Morosaur^is grandis. x-^^. (After Marsh.) a, First sacral vertebra; &, "transverse pro- cess " (rib) of first sacral; il, ilium ; z5, ischium ; «c, neural canal; pb, pubis. former stands almost vertically like that of elephants, and the knee is scarcely bent in the erect position. The shoulder-girdle consists of long scapulae, broad at the base and small, almost square and perforated coracoids, which latter fit into a pair of partly ossified plates representing the sternum. Atlantosanr7i
. The Cambridge natural history. Zoology. SAUROPODA 419. Fig. 96.—Front view of the pelvis oi Morosaur^is grandis. x-^^. (After Marsh.) a, First sacral vertebra; &, "transverse pro- cess " (rib) of first sacral; il, ilium ; z5, ischium ; «c, neural canal; pb, pubis. former stands almost vertically like that of elephants, and the knee is scarcely bent in the erect position. The shoulder-girdle consists of long scapulae, broad at the base and small, almost square and perforated coracoids, which latter fit into a pair of partly ossified plates representing the sternum. Atlantosanr7is immanis of the Upper Jurassic of Wyoming and Colorado, is supposed to have been 115 feet long, perhaps the biggest and bulkiest of aU animals, the femur measuring more than 6 feet in length and 2 in width at the upper end. Morosaurus grandis, of the Upper Jurassic of Wyoming, with allied forms in the Purbeck and Wealden of England, reached a length of 3 0 feet; in general appearance resembling Brontosaurus, but the sacrum consists of four vertebrae only, and the ischia are bent back- wards in their distal halves, so that their symphysis is formed by the shafts instead of by their ends. Ornithopsis and Cetiosaurus, likewise huge creatures, from the English Wealden and from the Great Oolite respectively, are rather imperfectly known, although several species of each, under many generic synonyms, have been described. Diplodocus longus, of the Upper Jurassic of Colorado and Wyoming, is almost completely known. More than 40 feet long, it had a head in its general outlines not unlike that of a horse, the skull being about two feet long. The outer nasal openings are confluent, elongated, and lie far back on the top of the skull. There is a pair of large antorbital, and a pair of smaller lacrymal fossae. The teeth, long and slender, are restricted to the anterior portion of the mouth, with many successors, which, decreasing in size, lie on the inner or lingual side of the function
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895
