| 释义 |
Walker, Alan Walker, Alan (Cyril)(1938– ) physical anthropologist; born in Leicester, England. He lived and worked in Africa before coming to the U.S.A. in 1973. He taught at Harvard (1973–78), then joined Johns Hopkins (1978). His extensive field research on the evolutionary implications of Kenyan fossils includes his discoveries of a 1.6-million-year-old Homo erectus (1984), and a 2.5-million-year-old "hyper-robust" Australopithecus boisei (1985). |