Laredo Formation | |
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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[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]