Harry Blackmore Whittington FRS was a British palaeontologist who made a major contribution to the study of fossils of the Burgess Shale and other Cambrian fauna. His works are largely responsible for the concept of Cambrian explosion, whereby modern animal body plans are explained to originate during a short span of geological period. With initial work on trilobites, his discoveries revealed that these arthropods were the most diversified of all invertebrates during the Cambrian Period. He was responsible for setting the standard for naming and describing the delicate fossils preserved in Konservat-Lagerstätten.
After completing his PhD from the University of Birmingham, Whittington spent much of his career out of Britain. He started his professional career at the University of Rangoon, Burma. Then he moved to China to teach at Ginling Women's College. After the end of World War II, he moved to Harvard University to become Professor of Palaeontology, and simultaneously Curator of Invertebrate Palaeontology at the Museum of Comparative Zoology. It was during this period that he began his major works in palaeontological research.