Panzhousaurus Rotundirostris Jiang et al., 2019 (Diapsida: Sauropterygia) and the Recovery of the Monophyly of Pachypleurosauridae

Panzhousaurus rotundirostris Jiang, Lin, Rieppel, Motani and Sun, 2019, is restudied on the basis of a second specimen from the Upper Member of the Guanling Formation near Panzhou City, Guizhou Pro...