Insider's Look Podcast 30: Feb. 19, 2010
Find out what's happening throughout the state during Arizona Archeology and Heritage Awareness Month: Calendar of Events.
Insider's Look at Grand Canyon Podcast
Return to the Insider's Look at Grand Canyon Index
Did You Know?
The Cambrian seas of the Grand Canyon were home to several kinds of trilobite, whose closest living relative is the modern horsehoe crab. They left their fossil record in the mud of the Bright Angel Shale over 500 million years ago.