I went to a fossil collecting site I hadn't been to in 48 years. The last time I was here was in 1977, when I was 19, with a geology field trip. We were on our way to the Grand Canyon. This is the cephalon, the head part, of one of the earliest trilobites. The rock was laid down in a shallow sea 550 million years ago. Today, the Latham Shale Formation is found in the Marble Mountains on old Route 66 in California.
