mammals_1
![mammals_1](https://www.elpalacio.org/wp-content/uploads/2020/02/mammals_1-1.jpg)
Dr. Dan Peppe (left; Baylor University) and students (Andrew Flynn, above, and Jeremiah Robinson, below) recording data on a new fossil leaf locality in badland exposures of the lower Paleocene Nacimiento Formation in the San Juan Basin, northwestern New Mexico. Photograph courtesy Thomas E. Williamson.