. Breviora. extraseapular distal radials proximal radials mesocoracold curacoid Figure lU. Pectoral girdle of Thratiidion noctivagus, medial view. Inset, upper right hand corner: extraseapular bone of same speci- men, lateral view. pelvic splint. pelvic radials pelvic bone Figure 11. Pelvic girdle of mm Thraiiidion noctivagus, dorsal view. Abdominal scutes (Fig. 12). Prepelvic scutes four to seven, keel-less, with slender lateral arms. Pelvic scute enlarged, with bifurcate or trifurcate lateral arms in larger specimens (specimen figured has two branches on one side, three on the o
. Breviora. extraseapular distal radials proximal radials mesocoracold curacoid Figure lU. Pectoral girdle of Thratiidion noctivagus, medial view. Inset, upper right hand corner: extraseapular bone of same speci- men, lateral view. pelvic splint. pelvic radials pelvic bone Figure 11. Pelvic girdle of mm Thraiiidion noctivagus, dorsal view. Abdominal scutes (Fig. 12). Prepelvic scutes four to seven, keel-less, with slender lateral arms. Pelvic scute enlarged, with bifurcate or trifurcate lateral arms in larger specimens (specimen figured has two branches on one side, three on the other). Post- pelvic scutes usually four, invariably with well-developed keels. Specimens only and mm have a full complement of pelvic scutes (Table 1). In a specimen only the pelvic scute is visible. In a specimen the scutes are repre- sented only by the lateral arms, which ossify separately. With. 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. , Museum of Comparative Zoology, Harvard University
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