Quebrada Monardes Formation

The Quebrada Monardes Formation is a geological formation in Chile dating back to the Early Cretaceous. It was deposited in warm, arid to semi-arid conditions.^[1] One portion (the Codocedo Limestone Member) preserves a perennial salt lake covering at least 1,500 square kilometres (580 sq mi); this lake dried up, leaving a large area of mudflats.^[1][2] Fossils of iguanodontian dinosaurs^[3][4] and ctenochasmatid pterosaurs^[1][5] have been found in the formation.

Quebrada Monardes Formation
Stratigraphic range: Early Cretaceous
Type	Geological formation
Sub-units	Codocedo Limestone Member
Underlies	Quebrada Seca Formation
Overlies	Lautaro Formation, Pedernales Formation
Lithology
Primary	Sandstone
Other	Pebbly sandstone, conglomerate, mudstone, non-marine evaporite, limestone
Location
Region	Atacama Region
Country	Chile

See also

• List of dinosaur-bearing rock formations
• List of pterosaur-bearing stratigraphic units