More than 1000 ultraconserved elements provide evidence that turtles are the sister group of archosaurs

@article{Crawford2012MoreT1,
  title={More than 1000 ultraconserved elements provide evidence that turtles are the sister group of archosaurs},
  author={Nicholas G. Crawford and Brant C. Faircloth and John E McCormack and Robb Thomas Brumfield and Kevin Winker and Travis C. Glenn},
  journal={Biology Letters},
  year={2012},
  volume={8},
  pages={783 - 786}
}
We present the first genomic-scale analysis addressing the phylogenetic position of turtles, using over 1000 loci from representatives of all major reptile lineages including tuatara. Previously, studies of morphological traits positioned turtles either at the base of the reptile tree or with lizards, snakes and tuatara (lepidosaurs), whereas molecular analyses typically allied turtles with crocodiles and birds (archosaurs). A recent analysis of shared microRNA families found that turtles are… 
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