| A vertebrate fossil spotted several years ago in exposures of the late Miocene Dove Spring Formation that at that date occurred well outside the boundaries of Red Rock Canyon State Park on Public Lands administered by the Bureau of Land Management; today, the bone-bearing exposures where this specimen had weathered out on the surface now lie within the rather recently expanded borders of Red Rock Canyon State Park, California. |
| This is a side-view of the same lower jaw from the extinct proboscidean Gomphotherium seen in the previous image. Late Miocene Dove Spring Formation of the Ricardo Group, El Paso Mountain, Kern County, California; in actual size, the specimen is roughly 70 centimeters long (about 28 inches). |