Most of the fossils collected from the Anza-Borrego Desert parklands are housed in the Colorado Desert District Stout Research Center, located at the Anza-Borrego Desert State Park Headquarters in Borrego Springs, California.
The approximately 13,000 specimens in the Park collection represent more than 550 types of plants and animals. Discovery of new fossil types continue to be made. During the field season of 2007/2008, for example, a crocodile jaw fossil was found in the Fish Creek-Vallecito Creek Badlands. This is the first example of a crocodile found in the Park, and for its time the first one west of Texas.
The collection, open to qualified scientists throughout the world for scholarly research, is an extremely valuable paleontology resource. It contains, for example, fossils from both the Pliocene-Pleistocene time boundary and the Blancan-Irvingtonian North America Land Mammal Age boundary.