the Bulgarian Geological Survey for many years, performing double duty as professor for those years. Fossils of Bulgaria Beginning in the 1950s, Tzankov drafted a project in which Bulgarian specialists would write on their area of expertise in paleontology as contributions to a multi volume series, which would be published by the Bulgarian Academy of Sciences. Tzankov became editor, and also provided assistance for definition of morphologic terms, as well as other explanations. He supplied the parts to the treatise which concerned his own specialty areas. Later career In 1967, Tzankov was elected corresponding member of the Bulgarian Academy of Sciences. In the same year he was also appointed as head of the Department of Paleontology at the Geological Institute of the Bulgarian Academy of Sciences, a position he held until 1982. Memberships Corresponding Member of the Bulgarian Academy of Sciences. Honorary Member of the Bulgarian Geological Society. Editor – Geologica Balcanica Legacy and awards In his later years, Tzankov continued his work on "Fossils of Bulgaria" and on phylogeny of the ammonites Holcodiscidae and Asteridiscidae (together with St. Breskovski). He died in Sofia in 1986. Vassil Tzankov was survived by his wife Kincha, daughter Yana and son Tzanko. He received many awards, including an honorary badge of Sofia University, state order Sts. Cyril and Methodius etc. His collection of fossils is preserved in the Sofia University "St. Kliment Ohridski" Museum of Paleontology and Historical Geology. Selected bibliography He is author of more than 100 publications, including 5 textbooks and 3 books. Les Fossiles de Bulgarie'', Sofia: Éditions de L’Académie Bulgare des Sciences. Publié sous la rédaction de V. Tzankov References External links 1905 births 1986 deaths Academic staff of Sofia University Bulgarian paleontologists Corresponding Members of the Bulgarian Academy of Sciences Sofia University alumni 20th-century Bulgarian zoologists