. The biology of the amphibia. Amphibians. THE SKELETON 239 a triradiate structure on each side with a long ilium, a short ischium and pubis meeting in the acetabulum (Fig. 88A). The more terrestrial labyrinthodonts had all three elements well ossified, and such a girdle was handed on to the reptiles as a primitive inheritance. Within the Embolomeri various changes. Fig. 89.—Variation in the sacrum of Atelopus varius. A single vertebra, the ninth, usually forms the sacrum, but others may fuse with it. occurred. Watson (1926) has shown that Diplovertebron retained a cartilaginous pubis, and thi
. The biology of the amphibia. Amphibians. THE SKELETON 239 a triradiate structure on each side with a long ilium, a short ischium and pubis meeting in the acetabulum (Fig. 88A). The more terrestrial labyrinthodonts had all three elements well ossified, and such a girdle was handed on to the reptiles as a primitive inheritance. Within the Embolomeri various changes. Fig. 89.—Variation in the sacrum of Atelopus varius. A single vertebra, the ninth, usually forms the sacrum, but others may fuse with it. occurred. Watson (1926) has shown that Diplovertebron retained a cartilaginous pubis, and this condition was handed on to the branchiosaurs and to modern frogs and salamanders. Amphibia never have the large obturator foramen characteristic of the pelvis of reptiles, nor do they usually ossify the pubis. In the Salientia the pelvis is greatly compressed, and in some. 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 Noble, Gladwyn Kingsley, 1894-1940. New York : McGraw-Hill
Size: 1295px × 1930px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookpublishernewyorkmcgr, booksubjectamphibians
