| phylogeography of the tree lizard, urosaurus ornatus: responses of populations to past climate change. | isolation due to both geological barriers and range contractions during the pleistocene glacial maxima has been an important cause of diversification of arid-adapted species in the north american deserts. tree lizards, urosaurus ornatus, are distributed across much of the southwestern arid regions and can tolerate a wide range of environments. thus, they may have avoided large-scale shifts in distribution caused by pleistocene climate change and any subsequent evolutionary impacts. cytochrome b ... | 2007 | 17868290 |