. Text book of zoology. Zoology. Glass B. Amphihia. 395 Tlie shoulder girdle of tlie Urodela is represented by a cartilaginous arcli on either side^ in wMch two regions are dis- tinguislied, one dorsal the other ventral, is the glenoid for the arm. The dorsal portion, the scapula, is narrower than the ventral, the coracoid, which partially overlaps its fellow of the other side. The lower part of the scapula is ossified to a varying extent, the ossification often reaches into the coracoid region, but the upper and lower portions of the girdle remain cartilaginous (Fig. 321). In the Anura (Fig.
. Text book of zoology. Zoology. Glass B. Amphihia. 395 Tlie shoulder girdle of tlie Urodela is represented by a cartilaginous arcli on either side^ in wMch two regions are dis- tinguislied, one dorsal the other ventral, is the glenoid for the arm. The dorsal portion, the scapula, is narrower than the ventral, the coracoid, which partially overlaps its fellow of the other side. The lower part of the scapula is ossified to a varying extent, the ossification often reaches into the coracoid region, but the upper and lower portions of the girdle remain cartilaginous (Fig. 321). In the Anura (Fig. 322), the coracoid is perforated by a large foramen, and thus separated into anterior and posterior portions, the latter ossified, the former not ossified, but covered by a membrane bone, the clavicle; the right and left coracoids either overlap or Pig. 321. Fig. 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 Boas, J. E. V. (Johan Erik Vesti), 1855-1935; Boas, J. E. V. (Johan Erik Vesti), 1855-1935. Lehrbuch der Zoologie. London, Sampson Low, Marston
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1896
