. Carnegie Institution of Washington publication. . Fig. 28. Fig. 29. The faces of the occipital condyles look downward as well as inward, requiring the presence of an exceptionally large intercentrum for the first vertebra; this intercentrum bt^re the main faces for the occipital condyles. The second vertebra, the axis, has the neural spine nearly twice as wide, anteroposteriorly, as the normal dorsal vertebra. The anterior edge of the spine is thin, and separates the two halves of the spine of the first vertebra. The posterior zygapophyses are normal in size. The transverse processes stand o
. Carnegie Institution of Washington publication. . Fig. 28. Fig. 29. The faces of the occipital condyles look downward as well as inward, requiring the presence of an exceptionally large intercentrum for the first vertebra; this intercentrum bt^re the main faces for the occipital condyles. The second vertebra, the axis, has the neural spine nearly twice as wide, anteroposteriorly, as the normal dorsal vertebra. The anterior edge of the spine is thin, and separates the two halves of the spine of the first vertebra. The posterior zygapophyses are normal in size. The transverse processes stand out prominently from the sides of the neural arch and bear faces for the single-headed rib. The intercentrum is normal, but does not bear a facet on the posterior edge for the lower part of the rib head. The third vertebra is normal. The fourth vertebra resembles the others in all respects but the neural spine; this is only one-half the size of those before and behind it. The upper end seems to fit into a notch formed by the overhanging anterior edge of the fifth. This peculiar character is observable in three specimens (see fig. 28 a). From the fifth to the eighteenth, the vertebrae are very similar in form. The neural spines are slender, with somewhat expanded and rugose apices, which lie nearly in a straight line. The dorsal vertebrae of Eryops have been. 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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Keywords: ., bookauthorcarnegie, bookcentury1900, bookdecade1910, bookyear1911
