Ivan Efremov (1908 - 1972) was a Soviet writer and paleontologist. In addition to introducing a new paleontological field taphonomy - the study of fossilization patterns, Yefremov has written a series of novels and short stories, including science fiction, historical fiction, adventure, and drama.
Yefremov is frequently ridiculed for his enthusiasm and faith in the viability of a communist society, as described in his best-known science fiction novel Andromeda Nebula.
It is not widely known that his more mature works such as Hour
of the Bull and Razor Blade, had the writer blacklisted by Stalin's administration, as Yefremov's interpretation of a fair and balanced society deviated sharply from the government propaganda of the time.
To Yefremov's fan he is known for his thorough scientific analysis, a study of art and history, emphasis on physical and intellectual balance and strong female characters.