Yefremov or Efremov (Russian: Ефремов) and Yefremova or Efremova ( Ефремова; feminine) is a common Russian surname. It is derived from the male given name Yefrem and literally means Yefrem's. Yefrem is the Russian form of the Hebrew name…
Ivan Antonovich Yefremov, sometimes Efremov was a Soviet paleontologist, science-fiction author and social thinker. He founded taphonomy, the study of fossilization patterns.