Workers dig up the fossilized bone of a prehistoric mammoth at the Quarry Creek development along state Route 78 in Carlsbad.
A construction site in Carlsbad, Calif., has unearthed a treasure trove of ice age fossils including the bones of mammoths, horses, turtles and a prehistoric bison. All the fossils date from 50,000 to 200,000 years old.
The bones were discovered after grading began this summer.
(more on the uncovered fossils at the San Diego construction site...)
