Cardiel Formation

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.^[1] The formation is overlain by the Slogget and San Julián Formations and overlies the Divisadero and Kachaike Formations.^[2] Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.^[3]

Cardiel Formation
Stratigraphic range: Maastrichtian
Type	Geological formation
Underlies	Slogget & San Julián Formations
Overlies	Divisadero & Kachaike Formations
Lithology
Primary	Sandstone, conglomerate
Other	Tuff
Location
Coordinates	49.0°S 71.4°W / -49.0; -71.4
Approximate paleocoordinates	50.9°S 60.9°W / -50.9; -60.9
Region	Santa Cruz Province
Country	Argentina
Extent	Austral Basin
Type section
Named for	Lake Cardiel
Named by	Russo & Flores
Year defined	1971
Cardiel Formation (Argentina)

Paleofauna

• Clasmodosaurus spatula - Teeth^[4] - (sauropod indet)
• "Loncosaurus argentinus" (ornithopod indet.) - Femur.^[5] 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