. The ancient life-history of the earth; a comprehensive outline of the principles and leading facts of palæontological science. Paleontology. Fig. 154.—Triassic Anomodont Reptiles. A, Skull oi Dicymodon Incerticeps, showing one of the great maxillary tusks; B, Skull of Oiuienodon Baijiii, showing the toothless, beak-like jaws. From the Trias of South Africa. (After Owen.) resemblance to the teeth of the extinct " Sabre-toothed Tiger" {Machairodiis). The bone of the upper arm (humerus) further shows some remarkable resemblances to the same bone in the Carnivorous Mammals. As has been


. The ancient life-history of the earth; a comprehensive outline of the principles and leading facts of palæontological science. Paleontology. Fig. 154.—Triassic Anomodont Reptiles. A, Skull oi Dicymodon Incerticeps, showing one of the great maxillary tusks; B, Skull of Oiuienodon Baijiii, showing the toothless, beak-like jaws. From the Trias of South Africa. (After Owen.) resemblance to the teeth of the extinct " Sabre-toothed Tiger" {Machairodiis). The bone of the upper arm (humerus) further shows some remarkable resemblances to the same bone in the Carnivorous Mammals. As has been previously noticed, Pro- fessor Owen is of opinion that some of the Reptilian remains of the Permian deposits will also be found to belong to this group of the "; Lastly, we find in the Triassic rocks the remains of Reptiles belonging to the great Mesozoic order of the Deinosaiiria. This order attains its maximum at a later period, and will be spoken of when the Jurassic and Cretaceous deposits come to be considered. The chief interest of the Triassic Reptiles of this group arises from the fact that they are known by their footprints as well as by their bones ; and a question has arisen whether the supposed footprints of birds which occur in the Trias have not really been produced by Deinosaurs. This leads us, therefore, to speak at the same time as to the evi- dence which we have of the existence of the class of Birds during the Triassic period. No actual bones of any bird have. 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 Nicholson, Henry Alleyne, 1844-1899. Edinburgh, London, Blackwood


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