Via AP Yahoo News:

RIVERSIDE, Calif. – A utility company preparing to build a new
substation in an arid canyon southeast of Los Angeles has stumbled on a
trove of animal fossils dating back 1.4 million years that researchers
say will fill in blanks in Southern California’s history.

The well-preserved cache contains nearly 1,500 bone
fragments, including a giant cat that was the ancestor of the
saber-toothed tiger, ground sloths the size of a modern-day grizzly
bear, two types of camels and more than 1,200 bones from small rodents.
Other finds include a new species of deer, horse and possibly llama,
researchers affiliated with the project said….

Hat tip: Rich K.