Biblián Formation
Stratigraphic range: Early Miocene (Colhuehuapian) ~21–19.2 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Underlies	Loyola Formation
Location
Coordinates	2°48′S 78°54′W / 2.8°S 78.9°W / -2.8; -78.9
Approximate paleocoordinates	3°30′S 76°00′W / 3.5°S 76.0°W / -3.5; -76.0
Region	Cañar Province
Country	Ecuador
Extent	Cuenca Basin
Type section
Named for	Biblián, Biblián Canton
Biblián Formation (Ecuador)

The Biblián Formation is an Early Miocene (Colhuehuapian in the SALMA classification) geologic formation of the Cuenca Basin in Ecuador. Fossils of Xenastrapotherium aequatorialis have been found in the formation.^[1]

• List of fossiliferous stratigraphic units in Ecuador

• S. E. Johnson and R. H. Madden. 1997. Uruguaytheriine Astrapotheres of Tropical South America. In R. F. Kay, R. H. Madden, R. L. Cifelli, J. J. Flynn (eds.), Vertebrate Paleontology in the Neotropics. The Miocene fauna of La Venta, Colombia 355-382