Chota Formation

The Chota Formation is an Early Campanian to Late Eocene geologic formation of the Cajamarca and western Amazonas Region in northern Peru. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus ("Baguasaurus").^[1] The formation was formerly named Bagua Formation.^[2]

Chota Formation
Stratigraphic range: Early Campanian-Late Eocene ~83–35 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Sub-units	Esperanza Mb. Rentema Mb. Fundo El Triunfo Mb.
Underlies	Cajaruro Formation
Overlies	Celendín Formation
Thickness	320 m (1,050 ft)
Lithology
Primary	Shale, sandstone
Other	Gypsum
Location
Coordinates	5°41′41″S 78°30′41″W
Approximate paleocoordinates	7.5°S 60.6°W / -7.5; -60.6
Region	Cajamarca
Country	Peru
Extent	Bagua Basin
Type section
Named for	Chota
Named by	Broggi
Location	Esperanza, Cajamarca
Year defined	1942
Chota Formation (Peru)

Fossil content

Color key Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon		Notes Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Dinosaurs

Sauropods

Sauropods of the Chota Formation
Genus	Species	Location	Stratigraphic position	Material	Notes	Images
Lithostrotia Indet.	Indeterminate	Cajamarca	Campanian to Maastrichtian		A lithostrotian titanosaur; informally known as "Baguasaurus".

See also

• List of dinosaur-bearing rock formations
  • List of stratigraphic units with indeterminate dinosaur fossils