The Grès supérieurs Formation (French for "Upper sandstone") is a geological formation in Laos whose strata date back to the Aptian to Albian stages of the Early Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.Weishampel et al., pp.563-570 It is equivalent to the Khok Kruat Formation of Thailand.
Fossil content The Grès supérieurs Formation has also yielded remains of indeterminate iguanodontians, as well as ornithopod and sauropod tracks.
Fish Fish Genus Species Location Stratigraphic position Material Notes Images Lanxangichthys L. alticephalus A three-dimensionally preserved skull A basal lepisosteiform
Turtle Turtle Genus Species Location Stratigraphic position Material Notes Images Shachemys S. laosiana Carapaces, scapula and partial humerus, skull An adochid
Dinosaurs Dinosaurs Genus Species Location Stratigraphic position Material Notes Images Euhelopodidae Indet. Indeterminate Mandschurosaurus M. laosensis An indeterminate iguanodontian Tangvayosaurus T. hoffeti "[Two] partial postcranial skeletons.""Table 13.1," in Weishampel et al., 2004, p.268 A sauropod Titanosaurus T. falloti An indeterminate sauropod possibly referable to Tangvayosaurus Ichthyovenator I. laosensis An incomplete skeleton A spinosaurid
Other fossils Sauropod tracks Iguanodontia indet (=Mandschurosaurus laosensis) Euornithopod tracks
See also List of dinosaur-bearing rock formations
References
Bibliography
Further reading
R. Allain, T. Xaisanavong, P. Richir and B. Khentavong. 2012. The first definitive Asian spinosaurid (Dinosauria: Theropoda) from the early cretaceous of Laos. Naturwissenschaften 99:369-377 F. de Lapparent de Broin. 2004. A new Shachemydinae (Chelonii, Cryptodira) from the Lower Cretaceous of Laos: preliminary data. Comptes Rendus Palevol 3:387-396 R. Allain, P. Taquet, B. Battail, J. Dejax, P. Richir, M. Véran, F. Limon-Duparcmeur, R. Vacant, O. Mateus, P. Sayarath, B. Khenthavong and S. Phouyavong. 1999. Un nouveau genre de dinosaure sauropode de la formation des Grès supérieurs (Aptien-Albien) du Laos [A new genus of sauropod dinosaur from the Grès supérieurs Formation (Aptian-Albian) of Laos]. Comptes Rendus de l'Académie des Sciences à Paris, Sciences de la Terre et des Planètes 329:609-616 J.-H. Hoffet. 1942. Description de quelques ossements de Titanosauriens du Sénonien du Bas-Laos [Description of some titanosaurian bones from the Senonian of Lower Laos]. Comptes Rendus des Séances du Conseil des Recherches Scientifiques de l'Indochine 1942(1):49-57 J.-H. Hoffett. 1936. Découverte du Crétacé en Indochine [Discovery of the Cretaceous in Indochina]. Comptes Rendus Hebdomadaires des Seances de l'Académie des Sciences 202:1867-1869