. The Cambridge natural history. Zoology. CHELONIA logous with the interclavicle, the epi-plastra are homologous with the clavicles of other Eeptiles, while the other pieces are genetically derived from, and are further modifications of, the so-called abdominal ribs of the Crocodilia and Prosaiiria. These plastral plates are never in direct contact with the. Fig. 67.—Bony shell of Testudo ibera. A, Ventral; B, dorsal; C, left-side view. In B, and on the right half of A, the position of the horny shields is indicated by dotted lines. The underlying bony plates are marked by strong lines. In B t
. The Cambridge natural history. Zoology. CHELONIA logous with the interclavicle, the epi-plastra are homologous with the clavicles of other Eeptiles, while the other pieces are genetically derived from, and are further modifications of, the so-called abdominal ribs of the Crocodilia and Prosaiiria. These plastral plates are never in direct contact with the. Fig. 67.—Bony shell of Testudo ibera. A, Ventral; B, dorsal; C, left-side view. In B, and on the right half of A, the position of the horny shields is indicated by dotted lines. The underlying bony plates are marked by strong lines. In B the 1st neural and costal plates, the 4th neural, costal, and 6th marginal plates, and the 7th are shaded. 1, 4, 6, First, fourth, and sixth neural plate'; M, in C, fifth left marginal plate ; Nu, nuchal plate. shoulder-girdle or with any other parts of the internal skeleton. In the young of all tortoises, and in the adult of the Chelonidae and Trionychidae, the several plastral plates enclose large, irregularly-shaped fontanelles. These are more or less filled up in the other groups; and in the Testudinidae especially the whole plastron forms one continuous mass* The navel is situ- ated between the hyo- and hypo-plastrals. Both these pairs are broader than the others, and are connected with the carapace by. 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
