Queguay Formation

The Queguay Formation is a geologic formation in Uruguay.^[1]

Queguay Formation
Stratigraphic range: Late Cretaceous-Paleocene ~100.5–56.0 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Overlies	Asencio Formation
Lithology
Primary	limestone
Location
Country	Uruguay
Type section
Named for	Queguay River, Uruguay

It consists of a lithological group composed of calcareous, calc-siliceous and siliceous rocks, of pedogenic or subterranean origin. It is formed by white and whitish limestones, massive, sandy and brecciated.

Vertebrate paleofauna

Several fossil gastropods have been found here:

• Bahiensis priscus Cabrera & Martínez, 2012^[2]
• Biomphalaria manya Cabrera & Martínez, 2018^[3]
• Biomphalaria reversa Cabrera, Martínez & Norbis, 2016^[4]
• Bulimulus frenguellii Cabrera et al., 2021^[5]
• Eoborus charruanus Frenguelli, 1930^[6]
• Pupoides gnocco Cabrera & Martínez, 2017^[7]

See also

• List of fossiliferous stratigraphic units in Uruguay
• Asencio Formation