. Comparative anatomy and physiology. ioo COMPARATIVE ANATOMY AND PHYSIOLOGY. By the almost universal consent of zoologists, the highest " order" of the Mammalia is that of the Primates; of these, the lowest suborder is that of the L*emuroidea (of which some naturalists would make a separate order), the highest that of the Anthropoidea, which is divisible into five " fami- lies," the highest of which is the Homiiiidse, represented by the single genus Homo. While Man is said to be the highest of animals, it is not to be forgotten that in the other divisions of zoologists the
. Comparative anatomy and physiology. ioo COMPARATIVE ANATOMY AND PHYSIOLOGY. By the almost universal consent of zoologists, the highest " order" of the Mammalia is that of the Primates; of these, the lowest suborder is that of the L*emuroidea (of which some naturalists would make a separate order), the highest that of the Anthropoidea, which is divisible into five " fami- lies," the highest of which is the Homiiiidse, represented by the single genus Homo. While Man is said to be the highest of animals, it is not to be forgotten that in the other divisions of zoologists there are forms in which structural characters are at least as perfectly elaborated, when we bear in mind their ancestral history and the relation of structure to function. The horse, the whalebone whale, the woodpecker, or the boa con- strictor, are, to cite only a few examples, forms in which structural organisation is as, if not more, com- plete, and as differentiated as it is in man. There remain to be considered very briefly several groups of animals which, in the present state of our knowledge, cannot be satisfactorily placed with any of the great phyla which we have just been describing. Of these the more im- portant are : 1. Brachiopoda. -These were placed by earlier naturalists with the Mollusca, from "Fig. 49.—Crania anomala. b, Arms. i • i i j_-u (After Davidson.) which, however, they are to be distinguished in consequence of the segmentation of the larva, the dorsal and ventral positions occupied by the two. 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 Bell, F. J. (Francis Jeffrey), 1855-1924. London, Cassell
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