Paleogeographic map of the Moon (1971) Published: 2023.02.19. Categories: 1970MoonPaleomap Wilhelms, D. E., & Davis, D. E. (1971). Two former faces of the moon. Icarus, 15(3), 368–372. doi:10.1016/0019-1035(71)90115-1 Drawings by Don Davis. Middle ImbrianEnd of Imbrian 3.3 Ga Today