23 April 1999
Vol 284, Issue 5414

About The Cover

Cover image expansion

COVER Newly discovered fossils from the Middle Awash valley of Ethiopia's Afar depression are 2.5 million years old. The remains include the cranium (~21 cm long) with jaw (~10 cm long) of a surprising new hominid species, Australopithecus garhi, as well as antelope limb bones (17.5 cm long) showing that early hominids were butchering large mammals for meat and marrow at this early date. See page 625. [Photos: (c) David L. Brill/1999 Atlanta]