. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 258 Bulletin Museum of Comparative Zoology, Vol. 139, No. 5. Figure 9. Phylogenetic diagram of the suggested ancestry of the Archosauria and the probable relationships among cap- torhinomorphs, synapsids, lepidosaurs and archosaurs. (Modified from Reig, 1967.) the mandibular articulation, are not de- veloped in the more advanced pelycosaurs, we can agree with Olson's suggestion that the Varanopsidae have departed from the main lines of pelycosaur evolution (Olson, 1965). Romer and Price (1940), however, maintained tha
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 258 Bulletin Museum of Comparative Zoology, Vol. 139, No. 5. Figure 9. Phylogenetic diagram of the suggested ancestry of the Archosauria and the probable relationships among cap- torhinomorphs, synapsids, lepidosaurs and archosaurs. (Modified from Reig, 1967.) the mandibular articulation, are not de- veloped in the more advanced pelycosaurs, we can agree with Olson's suggestion that the Varanopsidae have departed from the main lines of pelycosaur evolution (Olson, 1965). Romer and Price (1940), however, maintained that the Varanopsidae are an- cestral sphenacodontians, a contention that does not seem to be supported by the specialized, archosaur-like features shown by the known members of this family. The occurrence of true sphcnacodonts as early. 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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