Walnut Formation
Geologic formation in Texas, United States
From Wikipedia, the free encyclopedia
The Walnut Formation is a geologic formation from the Albian Stage stretching from central Texas to southern Oklahoma. It is part of the Fredericksburg Group. The formation preserves fossils dating back to the Cretaceous period, notably marine invertebrates Exogyra texana, Gryphaea marcoui, and Carseyella walnutensis.[1][2][3]
| Walnut Formation | |
|---|---|
| Stratigraphic range: Cretaceous | |
| Type | Formation |
| Location | |
| Region | Texas, Oklahoma |
| Country | United States |
