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

Nicholas G. Crawford1,*, Brant C. Faircloth2, John E. McCormack3, Robb T. Brumfield3,4, Kevin Winker5 and Travis C. Glenn6 Department of Biology, Boston University, Boston, MA 02215, USA Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, USA Museum of Natural Science, and Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA University of Alaska Museum, 907 Yukon Drive, Fairbanks, AK 99775, USA Department of Environmental Health Science and Georgia Genomics Facility, University of Georgia, Athens, GA 30602, USA *Author for correspondence ([email protected]).