Provincialization of terrestrial faunas following the end-Permian mass extinction., Sidor C A, Angielczyk K D, Nesbitt S J, Smith R M H, Tsuji L A, Vilhena D A, Huttenlocker A K, Peecook B R, and Steyer J S, Proceedings of the National Academy of Science, USA, Volume 110, p.8129-8133 (2013)