Xinminosaurus is an extinct genus of cymbospondylid ichthyosaur known from the Middle Triassic (mid-late Anisian stage) of Guizhou Province, China. It was first named by Dayong Jiang, Ryosuke Motani, Weicheng Hao, Lars Schmitz, Olivier Rieppel, Yuanlin Sun and Zuoyu Sun in 2008 and the type species is Xinminosaurus catactes. The generic name is derived from Xinmin, the district where the fossil was found, and Greek sauros, "lizard". The specific name is derived from Greek kataktes, "crusher", in reference to one of the taxon's autapomorphies - the presence of bulbous and laterally compressed crushing teeth in maxilla and posterior dentary. Xinminosaurus is known only from the holotype GMPKU-P-1071, a nearly complete skeleton deposited in Geological Museum, Peking University. It was collect