Description: (American Botanist, Ornithologist and Naturalist Who Discovered Much About the Distribution and Structure of Fossilized Plants)
Renowned paleobotanist Frank Hall Knowlton is remembered for his pioneering study of fossilized plants and geologic climates. He not just taught botany but had also been associated with the U.S. Geological Survey. His interests also included birds, and he contributed to a volume named Birds of the World.