Carl Rudolf Florin (1894–1965) received his education from the University of Stockholm. During the early years, Florin was a “docent” (lecturer) at the Riks-museum (Swedish Museum of Natural History) and served under Thore G. Halle, who was director of the Paleobotanical Department. In 1942, Florin received his professorship, and he became the director of the Bergius Foundation in 1944. Florin was a pioneer in fossil-conifer studies. Recognition of his great expertise on primitive conifers and their relationship to the Cordaitales came late in life. His interpretations and concepts are widely utilized today. Florin’s magnum opus, entitled “Die Koniferen des Oberkarbons...