Wu 1994. Late Triassic-Early Jurassic sphenodontians from China and the phylogeny of the Sphenodontia. Fraser, Nicholas C.; Sues, Hans-Dieter[Eds]. In the shadow of the dinosaurs: early Mesozoic tetrapods., Cambridge University Press, Cambridge, New York & Melbourne, 1994: i-x, 1-435. Chapter pagination: 38-69