Laredo Formation
| Laredo Formation | |
|---|---|
| Stratigraphic range: Lutetian (Uintan) ~ | |
| Type | Formation |
| Unit of | Claiborne Group |
| Lithology | |
| Primary | Sandstone |
| Other | Shale, limestone |
| Location | |
| Coordinates | 26°24′N 99°12′W / 26.4°N 99.2°W |
| Approximate paleocoordinates | 28°24′N 89°36′W / 28.4°N 89.6°W |
| Region | Texas Nuevo León, Tamaulipas |
| Country | United States, Mexico |
The Laredo Formation is a geologic formation and Lagerstätte in Texas, United States, and Nuevo León and Tamaulipas, Mexico. It preserves fossils dating back to the Lutetian stage of the Eocene period. Among many other fossils, the formation has provided invertebrates, vertebrates, leaves, pollen and spores and fossil wood of the brackish water palm Nypa sp.