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Citation for Study 12742

About Citation title: "More than 1000 ultraconserved elements provide evidence that turtles are the sister group of archosaurs.".
About Study name: "More than 1000 ultraconserved elements provide evidence that turtles are the sister group of archosaurs.".
About This study is part of submission 12742 (Status: Published).

Citation

Crawford N.G., Faircloth B.C., Mccormack J.E., Brumfield R., Winker K., & Glenn T.C. 2012. More than 1000 ultraconserved elements provide evidence that turtles are the sister group of archosaurs. Biology Letters, : 1-4.

Authors

  • Crawford N.G. (submitter) Phone 6174603680
  • Faircloth B.C. Phone 310-415-7551
  • Mccormack J.E.
  • Brumfield R.
  • Winker K.
  • Glenn T.C.

Abstract

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 posi- tioned turtles either at the base of the reptile tree or with lizards, snakes and tuatara (lepido- saurs), whereas molecular analyses typically allied turtles with crocodiles and birds (archo- saurs). A recent analysis of shared microRNA families found that turtles are more closely related to lepidosaurs. To test this hypothesis with data from many single-copy nuclear loci dis- persed throughout the genome, we used sequence capture, high-throughput sequencing and pub- lished genomes to obtain sequences from 1145 ultraconserved elements (UCEs) and their vari- able flanking DNA. The resulting phylogeny provides overwhelming support for the hypothesis that turtles evolved from a common ancestor of birds and crocodilians, rejecting the hypothesized relationship between turtles and lepidosaurs.

Keywords

turtles; ultraconserved elements; phylogenomics; evolution; archosaurs

External links

About this resource

  • Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S12742
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