Charles Doolittle Walcott, Paleontologist
Ellis Yochelson | Filed under: Biography
With very little formal education (he did not complete high school), Walcott became special assistant to James Hall, State Paleontologist of New York, and made a fundamental contribution to the study of trilobites by describing their limbs. He joined the new U.S. Geological Survey in 1879 and rose through the ranks to become its director in 1894, a position he held for 13 years. Walcott is known best for having documented in detail the “Cambrian,” the oldest richly fossiliferous rocks in the world. His primary efforts for the U.S. Geological Survey were in keying fossils to the sequence of rocks, and he brought new precision to the biostratigraphy of the older rocks of North America.