. Cold-blooded vertebrates: part I. Fishes. Fishes; Amphibians; Reptiles. REPTILES order of reptile had left them behind. Some contended that the teeth were those of dinosaurs and had no con- nection with the extinct lizards, while others adhered to Dr. Leidy's theory concerning them. So the matter stood until 1921, when Mr. George F. Sternberg found in Upper. Fig. 67. Sketch restoration of the skeleton of Trnodon -caHdus Cretaceous deposits in Alberta the partial skeleton of a reptile, including a complete skull in whose jaws were teeth of the Troodon pattern (Fig. 67). This skull, now in the
. Cold-blooded vertebrates: part I. Fishes. Fishes; Amphibians; Reptiles. REPTILES order of reptile had left them behind. Some contended that the teeth were those of dinosaurs and had no con- nection with the extinct lizards, while others adhered to Dr. Leidy's theory concerning them. So the matter stood until 1921, when Mr. George F. Sternberg found in Upper. Fig. 67. Sketch restoration of the skeleton of Trnodon -caHdus Cretaceous deposits in Alberta the partial skeleton of a reptile, including a complete skull in whose jaws were teeth of the Troodon pattern (Fig. 67). This skull, now in the University of Alberta Museum, Edmonton, bears unmistakable evidence that the animal of whom it was once a vital part belonged to that great group of dino- saurs we have just been discussing—the Predentata. This evidence is the predentate bone, joining the two lower jaw bones, a feature peculiar to this group. Thus nearly sixty-five years after the discovery of the first Troodon tooth, the true identity of the animal to which it belonged was revealed. [246]. 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 Hildebrand, Samuel F. (Samuel Frederick), 1883-1949; Gilmore, Charles Whitney, 1874-; Cochran, Doris M. (Doris Mable), 1898-1968. [New York, Smithsonian institution series, inc. ]
Size: 1829px × 1366px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksubj, booksubjectfishes, booksubjectreptiles
