"The Colorado Desert of southeastern California was not always a seemingly barren wilderness. This was once a verdant landscape- an environment of rivers and streams, lakes, forest and savanna. Before that it held an inland ocean."
"Fossil Treasures of the Anza-Borrego Desert",
George T. Jefferson and Lowell Lindsay, editors, Sunbelt Publications, San Diego California, 2006
George T. Jefferson and Lowell Lindsay, editors, Sunbelt Publications, San Diego California, 2006