Bajada Colorada Formation

Bajada Colorada Formation
Stratigraphic range: Late Berriasian-Early Valanginian ~140–134 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Unit of	Mendoza Group
Underlies	Agrio Formation
Overlies	Quintuco & Picún Leufú Formations
Lithology
Primary	Sandstone, conglomerate
Other	Siltstone, claystone
Location
Coordinates	39°48′S 69°42′W / 39.8°S 69.7°W / -39.8; -69.7
Approximate paleocoordinates	38°48′S 32°12′W / 38.8°S 32.2°W / -38.8; -32.2
Region	Neuquén Province
Country	Argentina
Extent	Neuquén Basin
Type section
Named by	Roll
Year defined	1939
Bajada Colorada Formation (Argentina)

The Bajada Colorada Formation is a geologic formation of the southern Neuquén Province in the Neuquén Basin of northern Patagonia, Argentina. The formation belongs to the Mendoza Group and is Late Berriasian to Early Valanginian in age. The formation is renowned for preserving fossil remains of Bajadasaurus pronuspinax, a genus of dicraeosaurid dinosaurs named after the formation.