. Elements of the comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates -- Anatomy. VERTEBRAL COLUMN. 39 Amphibia.—The vertebral column of Urodeles may be divided into cervical, thoraco-lumbar, sacral, and caudal regions, and these regions can be recognised, except in certain modified forms such as Snakes, from Urodeles up to the Mam- malia. On account of the absence of extremities in Chilians, the vertebral column can only be divided into three regions, cervical,. FIG. 29.'—TAIL OF Protopterus. thoracic, and a very short caudal. In Anura, no special lumbar region can be recogn
. Elements of the comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates -- Anatomy. VERTEBRAL COLUMN. 39 Amphibia.—The vertebral column of Urodeles may be divided into cervical, thoraco-lumbar, sacral, and caudal regions, and these regions can be recognised, except in certain modified forms such as Snakes, from Urodeles up to the Mam- malia. On account of the absence of extremities in Chilians, the vertebral column can only be divided into three regions, cervical,. FIG. 29.'—TAIL OF Protopterus. thoracic, and a very short caudal. In Anura, no special lumbar region can be recognised, and the caudal portion is modified to form a " urostyle " (see p. 42). The notochord of Urodele Iarva3, like that of most Fishes, undergoes vertebral constrictions, while intervertebrally it grows thicker, and accordingly appears expanded. Thus the vertebrae here. 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 Wiedersheim, Robert, 1848-1923; Parker, W. N. (William Newton), d. 1923. London, New York, Macmillan
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherlondonnewyorkmacmi
