. The dinosaurs of North America. Dinosaurs. 200 DINOSAURS OF NORTH AMERICA. the main characters of the animal can be determined with considerable certainty. A study of these remains shows that the reptile they represent was one of the typical Oruithopoda, and one of the most bird-like yet dis- covered. A dentary bone in fair preservation (fig. 42) indicates that the animal was herbivorous, and the single row of pointed and com- pressed teeth, thirteen in number and small in size, forms a more regu- lar and uniform series than in any other member of the group. The ilium, also, shown in fig. 43
. The dinosaurs of North America. Dinosaurs. 200 DINOSAURS OF NORTH AMERICA. the main characters of the animal can be determined with considerable certainty. A study of these remains shows that the reptile they represent was one of the typical Oruithopoda, and one of the most bird-like yet dis- covered. A dentary bone in fair preservation (fig. 42) indicates that the animal was herbivorous, and the single row of pointed and com- pressed teeth, thirteen in number and small in size, forms a more regu- lar and uniform series than in any other member of the group. The ilium, also, shown in fig. 43, is characteristic of the Oruithopoda, having a slender, pointed process in front, butoue much shorter than in any of 42 43. Fig 42.—Dentary bone ol' Xanosaiirus agilis JIarsb ; seeu from the left. Fig. 43.—Ilium of same individual; leftside. Botli figures are natural size Fig. 44.—Left femur of Nanosaurus rex Marsh; front view. Fig. 45 —Proximal end of same. Fig. 46.—The same bone; side view. Fig. 47.—The same; back view. Fig. 48.—Distal end of same. All five figures are one-half natural size. the larger forms. The posterior eud is also of moderate size. All the bones of the limbs and feet are extremely hollow, strongly resembling in this respect those of birds. The femur was shorter than the tibia. The metatarsals are greatly elongated and very slender, and there were probably but three functional toes in the hind foot. A second form referred by the writer to this genus, under the name Nanosai rus rex, may perhaps belong to the genus Laosaurus. The femur is shown in figs. 44 to 48, above. The animal thus represented. 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 Marsh, Othniel Charles, 1831-1899. Washington, Govt. Print. Off.
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherwashi, bookyear1896
