Raymond Cecil Moore (February 20, 1892, Roslyn, Washington – April 16, 1974, Lawrence, Kansas) was an American geologist and paleontologist. He is known for his work on Paleozoic crinoids, bryozoans, and corals. Moore was a member of US Geological Survey from 1913 until 1949. In 1919 he became professor at the University of Kansas (Lawrence). In 1953 Professor Moore organized the launch and became the first editor of the still ongoing multi-volume work Treatise on Invertebrate Paleontology. Contributors to the Treatise have included the world's specialists in the field. He served as president of the Geological Society of America in 1958. In 1970 he was awarded the Mary Clark Thompson Medal from the National Academy of Sciences. Early life Moore was raised in Kansas, Missouri, Wisconsin and Illinois. After attending high school in Milwaukee and Chicago, he enrolled in Denison University, taking his A.B. degree. He took his PhD at the University of Chicago in 1916, under the supervision of Stuart Weller. His dissertation was the stratigraphy of the Mississippian System of Missouri. Early career Moore commenced work as an Assistant Professor in geology at the University of Kansas in 1916. He became state geologist and director of the Geological Survey of Kansas. He married Georgine Watters in Chicago in 1917. In 1920, he was promoted to full Professor. He would alternate in his role of state geologist/director of the Geological Survey for 38 years, performing double duty as Professor for 23 of those years. After commencing work in Kansas he made the decision to analyse Permian-Pennsylvanian stratigraphy of the Midcontinent. He studied sedimentary units from Nebraska, Iowa and Missouri, as far as Oklahoma. He specialised on genetic stratigraphy, which would become cyclic sedimentation and sequence stratigraphy in modern study. Moore and his wife Georgine divorced in 1935. Their daughter Marjorie Ann Moore had been born in 1928. Moore married Lilian Boggs in St Louis, Missouri in 1936. In addition to his stratigraphic work, Moore was able to define and clarify his findings by identifying their unique fossil signatures. He studied oil and gas resources up to the Precambrian period, as well as igneous intrusives in several counties within Kansas. His maps of the state are still distributed by the Kansas Geological Survey today. Moore also developed a uniform stratigraphic code for the Midcontinent. He expanded into the area of facies. He used ecological communities (ecosystems) to help understand cyclothems.