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| | [No title] (Site not responding. Last check: 2007-10-22) |
 | | Here, ten additional saurian origins are recognized on the basis of unpublished and recently published evidence, three in the Iguanidae, two in the Scincidae, and one in each of the following groups: Agamidae, Chamaeleontidae, Anguidae, Xenosauridae, and Anillidae. |
 | | As phylogenetic relationships are clarified, further origins seem likely to be detected, particularly in the Colubridae, Hydrophiidae, Scincidae, and Iguanidae. |
 | | The discontinuous distribution of the origins of viviparity among the reptilian families supports the hypothesis that selective pressures, preadaptations, and constraints vary at high taxonomic levels. |
| shakti.trincoll.edu /~blackbur/ar85.html (271 words) |
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