. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Fig. 8. Diploceraspis, "atlas" and "axis" vertebrae. Approximate enlarge- ment, x A, "; , Anterior view; , lateral view, anterior to left; , posterior view; A4, ventral view, anterior up; AS, dorsal view, anterior up; B, "; , Lateral view, anterior to left; , anterior view; B3, posterior view. spine is far more strongly developed than in Diplocaulus and the zygapophyses face ventrally rather than posteroventrally. Other- wise, the "atlas"
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Fig. 8. Diploceraspis, "atlas" and "axis" vertebrae. Approximate enlarge- ment, x A, "; , Anterior view; , lateral view, anterior to left; , posterior view; A4, ventral view, anterior up; AS, dorsal view, anterior up; B, "; , Lateral view, anterior to left; , anterior view; B3, posterior view. spine is far more strongly developed than in Diplocaulus and the zygapophyses face ventrally rather than posteroventrally. Other- wise, the "atlas" agrees with that of Diplocaulus; it has not been described in the other nectrideans. The "axis" (Fig. 8B) is distinguished from the remaining verte- brae by the presence of an anterior zygantrum (for the zygosphene of atlas) in the place of a zygosphene. This centrum is also rela- tively short (its length is only about 2/3 the height of the verte- bra) as compared with the thoracic vertebrae (which are longer than high). The transverse processes extend posterolaterally to. 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. : The Museum
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