| Portion of the lower jaw of a horse. Late Miocene Dove Spring Formation of the Ricardo Group, El Paso Mountain, Kern County, California; in actual size, the specimen is 16 centimeters long (roughly 6 and one-half inches). |
| 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. |
| Portion of the lower jaw of a horse. Late Miocene Dove Spring Formation of the Ricardo Group, El Paso Mountain, Kern County, California; in actual size, the specimen is 16 centimeters long (roughly 6 and one-half inches). |