. The Cambridge natural history. Zoology. 448 TEETH OF SEALS six, and the additional molar was at the end of the series, thus suggesting a lengthening of jaw coupled with an increase in numher of teeth. The incisor teeth of the Piunipedia differ from those of the land Carnivora in that there are nearly always fewer than j,, at least in the adult animal In possessing lobulated kidneys the Pinnipedia differ from all terrestrial Carnivores except the Otters and Bears—a significant fact. In the characters of the skeleton the Pinnipedia show many peculiarities. The cranial part of the skull is prop
. The Cambridge natural history. Zoology. 448 TEETH OF SEALS six, and the additional molar was at the end of the series, thus suggesting a lengthening of jaw coupled with an increase in numher of teeth. The incisor teeth of the Piunipedia differ from those of the land Carnivora in that there are nearly always fewer than j,, at least in the adult animal In possessing lobulated kidneys the Pinnipedia differ from all terrestrial Carnivores except the Otters and Bears—a significant fact. In the characters of the skeleton the Pinnipedia show many peculiarities. The cranial part of the skull is proportionately to the facial part greater than in terrestrial Carnivora; there is no lachrymal bone, and the orbit is to some extent defective in ossification. The alisphenoid canal, so important a feature in the Carnivora, may be present or absent. It is present, for example, in Otaria julata} This genus also has the more. Fig. 228.—Patagoniaa Sea-Lion. Otaria jubata. primiti\-e small and rugged tympanic bullae, which are inflated and more Cat-like in others. The vertebrae show an interesting Creodont peculiarity in the complex interlocking arrangements of the zygapophyses of the dorsal vertebrae. The ossicula auditus differ from those of their terrestrial allies in their large size and massive growth. In this they have come to be like those of the AVhales and Sirenians. There is no doubt about their close resemblance to the ' IFiirie, Trans. Zool. Soc. riii. 1874, p. 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 Harmer, S. F. (Sidney Frederic), Sir, 1862- ed; Shipley, A. E. (Arthur Everett), Sir, 1861-1927. ed. [London, Macmillan and Co. , Limited; New York, The Macmillan Company
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895
