Chen, X.-H. Cheng, L. 2010 A new species of <em>Mixosaurus</em> (Reptilia: Ichthyosauria) from the Middle Triassic of Pu'An, Guizhou, China Acta Palaeontologica Sinica 49 251-260 Petrolacosaurus Thadeosaurus Claudiosaurus Hovasaurus Hupehsuchus Utatsusaurus Grippia Parvinatator Chaohusaurus Cymbospondylus_petrinus Cymbospondylus_buchseri Mixosaurus_cornalianus Mixosaurus_atavus Mixosaurus_nordenskioeldii Besanosaurus Shastasaurus Shonisaurus Californosaurus Toretocnemus Hudsonelpidia Macgowanania Suevoleviathan Temnodontosaurus Leptonectes Excalibosaurus Eurhinosaurus Ichthyosaurus Stenopterygius Brachypterygius Opthalmosaurus Caypullisaurus Platypterygius Mixosaurus_xindianensis Mixosaurus_callawayi Mixosaurus_panxianensis Phalarodon_frassi Osteology Maximum Parsimony Based on reanalysis of the original matrix. Chen_et_Cheng_2010a