Laredo Formation

The Laredo Formation is a geologic formation and Lagerstätte^[1] in Texas, United States, and Nuevo León and Tamaulipas, Mexico. It preserves fossils dating back to the Lutetian stage of the Eocene period.^[2] Among many other fossils, the formation has provided invertebrates, vertebrates, leaves, pollen and spores and fossil wood of the brackish water palm Nypa sp.^[1]

Laredo Formation
Stratigraphic range: Lutetian (Uintan) ~48–42 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Formation
Unit of	Claiborne Group
Lithology
Primary	Sandstone
Other	Shale, limestone
Location
Coordinates	26.4°N 99.2°W / 26.4; -99.2
Approximate paleocoordinates	28.4°N 89.6°W / 28.4; -89.6
Region	Texas Nuevo León, Tamaulipas
Country	United States, Mexico
Laredo Formation (Mexico)

See also

• List of fossiliferous stratigraphic units in Mexico
• List of fossiliferous stratigraphic units in Texas
• Paleontology in Texas