. Chordate morphology. Morphology (Animals); Chordata. Figure 6-14. Dorsal vertebrae of the fossil amphibian Eryops in lateral view. A, and as seen from behind, B. (After Williston). Figure 6-15. Dorsal vertebrae of Upper Pennsylvanion bronchiosaur, Amphibamus. (After Eaton, 1959, and Gregory, 1950) Crvplobranchus and 18 in Necturus; only the first presacral in each lacks a rib. The first vertebra articulates with the skull through 3 facets; its body has a rounded odontoid process which lies between the occipital condyles of the skull and bears a facet on its tip, while what appears to be tran
. Chordate morphology. Morphology (Animals); Chordata. Figure 6-14. Dorsal vertebrae of the fossil amphibian Eryops in lateral view. A, and as seen from behind, B. (After Williston). Figure 6-15. Dorsal vertebrae of Upper Pennsylvanion bronchiosaur, Amphibamus. (After Eaton, 1959, and Gregory, 1950) Crvplobranchus and 18 in Necturus; only the first presacral in each lacks a rib. The first vertebra articulates with the skull through 3 facets; its body has a rounded odontoid process which lies between the occipital condyles of the skull and bears a facet on its tip, while what appears to be transverse processes bear hollowed facets for the occipital condyles. There is a low neural arch with strong postzygapophyses. The second and succeeding vertebrae, back to the third caudal, bear single-headed ribs. The rib-bearing vertebrae are quite uniform. They have low neural arches, distinct pre- 152 • THE VERTEBRATE BODY SKELETON. 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 Jollie, Malcolm. New York, Reinhold
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