The Cardiel Formation is a Maastrichtian geologic formation of the Austral Basin in Santa Cruz Province, Argentina. The formation comprises sandstones and conglomerates with abundant tuff beds.Pérez Panera, 2010, p.45 The formation is overlain by the Slogget and San Julián Formations and overlies the Divisadero and Kachaike Formations.Pérez Panera, 2010, p.52 Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
Paleofauna Clasmodosaurus spatula - Teeth"Table 13.1," in Weishampel, et al. (2004). Page 271. - (sauropod indet) "Loncosaurus argentinus" (ornithopod indet.) - Femur."Table 19.1," in Weishampel, et al. (2004). Page 417. This genus may have also been found in the Matasiete Formation.
See also List of dinosaur-bearing rock formations List of stratigraphic units with few dinosaur genera Allen Formation
References
Bibliography
Further reading J. E. Powell. 2003. Revision of South American titanosaurid dinosaurs: palaeobiological, palaeobiogeographical and phylogenetic aspects. Records of the Queen Victoria Museum Launceston 111:1-173