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. The Biological bulletin. Biology; Zoology; Marine biology. THE SACRUM OF THE LACERTILIA. 87 very short. They arise broadly from the centra of the vertebrse. The same may be said of the adult specimen. In the Phrynosoma specimens a nearer approach to the ancestral condition of the vertebrate sacrum is seen. Gegenbaur (13) is of the opinion that the sacrum of the vertebrates was primitively of but one vertebra. Fig. 1. Skeleton of Phrynosoma douglassi hernandesi. Girard. as is found in the modern amphibians. Such a condition is what would be expected. In Phrynosoma the first sacral vertebra be

. The Biological bulletin. Biology; Zoology; Marine biology. THE SACRUM OF THE LACERTILIA. 87 very short. They arise broadly from the centra of the vertebrse. The same may be said of the adult specimen. In the Phrynosoma specimens a nearer approach to the ancestral condition of the vertebrate sacrum is seen. Gegenbaur (13) is of the opinion that the sacrum of the vertebrates was primitively of but one vertebra. Fig. 1. Skeleton of Phrynosoma douglassi hernandesi. Girard. as is found in the modern amphibians. Such a condition is what would be expected. In Phrynosoma the first sacral vertebra be Stock Photo
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Library Book Collection / Alamy Stock Photo

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RHG8Y5

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7.1 MB (491.2 KB Compressed download)

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1334 x 1873 px | 22.6 x 31.7 cm | 8.9 x 12.5 inches | 150dpi

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. The Biological bulletin. Biology; Zoology; Marine biology. THE SACRUM OF THE LACERTILIA. 87 very short. They arise broadly from the centra of the vertebrse. The same may be said of the adult specimen. In the Phrynosoma specimens a nearer approach to the ancestral condition of the vertebrate sacrum is seen. Gegenbaur (13) is of the opinion that the sacrum of the vertebrates was primitively of but one vertebra. Fig. 1. Skeleton of Phrynosoma douglassi hernandesi. Girard. as is found in the modern amphibians. Such a condition is what would be expected. In Phrynosoma the first sacral vertebra bears large stout transverse processes with expanded ends. The second sacral bears, much smaller processes but they are still larger than the processes on the succeeding pygals. These like-. 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 work.. Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-; Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report; HighWire Press. Lancaster, Pa. [etc. ] : Lancaster Press, inc. [etc. ]

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