. Breviora. Figure 13. Axial skeleton of Thrattidion noctivagits, lateral view. hypaxials are unbranched. The anterior hypaxials are almost as long as the ribs and are expanded near their proximal ends into a triangular lamella. There are ten to twelve supraneural bones. The first supra- neural lies just dorsal to the first neural spine; the last lies over the tenth to twelfth neural spine. Caudal skeleton (Fig. 14). Caudal skeleton with six hypurals, hypural 1 separated from ural centrum 1 by a distinct gap. Preural centrum 1, ural centrum 1 and ural centrum 2 fused. epurals 1-3 urost
. Breviora. Figure 13. Axial skeleton of Thrattidion noctivagits, lateral view. hypaxials are unbranched. The anterior hypaxials are almost as long as the ribs and are expanded near their proximal ends into a triangular lamella. There are ten to twelve supraneural bones. The first supra- neural lies just dorsal to the first neural spine; the last lies over the tenth to twelfth neural spine. Caudal skeleton (Fig. 14). Caudal skeleton with six hypurals, hypural 1 separated from ural centrum 1 by a distinct gap. Preural centrum 1, ural centrum 1 and ural centrum 2 fused. epurals 1-3 urostyle. parhypural Figure 14. Caudal skeleton of Thrattidion noctivagits, lateral view (H^-H^ = hypurals; P^ + U^ + U., = fused preural centrum 1, ural centrum 1 and ural centrum 2; P., = preural centrum 2).. 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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