Palaeontologist and professor who carried out excavations and surveys in Africa, especially in Maghreb, Ain Hanech, Ternifine, Omo-Turkana, and Omo Valley. The Omo remains, a group of hominid fossils, the oldest of which are about 3 million years old, were found by Arambourg, Yves Coppens, F. Clark Howell, and others on an expedition in Ethiopia's Omo River region in 1967-1974. These fossil finds represented a breakthrough in the study of early hominids as they were the first found to go back to such an early date. The earliest previously uncovered fossils dated to 1,750,000 years. He also found a Homo erectus (Alanthropus) at an Acheulian site at Ternifine.