Bill Krebs, UCLA & WMRC alumna will be presenting on the Cambrian fossil history of the White Mountains. The Cambrian Explosion was a seminal event in the history of life on Earth. It occurred ~ 541 mya at the beginning of the Cambrian Period and is characterized by the first appearance of abundant mineralized invertebrates,...

Presented by John D. Wehausen, Ph.D., retired WMRC research scientist. The Owens Valley is unique in having different subspecies of bighorn sheep on each side. This talk will put our local bighorn sheep into a much larger context of the evolution of all wild sheep in North America, including when different forms appeared. It will...