Sinosauropteryx
Three specimens have been assigned to "Sinosauropteryx prima": the holotype GMV 2123 (and its counter slab [opposite face], NIGP 127586), NIGP 127587, and D 2141. Another specimen, IVPP V14202, was assigned to the genus but not to the only species by Zhang and colleagues. The assignment of an additional larger specimen to "S. prima", GMV 2124, was later found to be in error. All of the fossils were found in the Jianshangou or Dawangzhangzi Beds of the Yixian Formation in the Beipiao and Lingyuan regions of Liaoning, China. These fossil beds have been dated to 124.6–122 million years ago, during the early Aptian stage of the Early Cretaceous.
Xinminosaurus
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 collected from the conodont "Nicoraella kockeli" biozone (Pelsonian of the Anisian stage), from the upper member of the Guanling Formation. It was found near Yangjuan Village of the Xinmin District, Panxian County.