Background
Hertlein was born on a farm in Pratt County, Kansas.
Hertlein was born on a farm in Pratt County, Kansas.
After graduating high school in Wichita, Kansas, he moved to the West Coast and entered the University of Oregon as a geology major. After graduating with a Bachelor of Arts, Hertlein enrolled as a graduate student at Stanford University. He received his doctorate in 1929.
His dissertation was on the Pliocene fossils of the San Diego, California area.
In the 1930s, he traveled to the Galapagos Islands and the nearshore areas of Central America and Mexico. He published over 150 papers on Recent and fossil mollusks, echinoderms, and brachiopods from California, Oregon, Washington, and Mexico.
They collaborated on several papers.