In the early 2000s a research boom enriched the knowledge base about the Kibish Formation. Known as Omo Kibish 1 (Omo I), the fossil is 196 ± 5 ka old and is among two other Omo remains (Omo II and Omo III) that were found in Member I. The Kibish formation, in particular, is most notable for Richard Leakey's work there in 1967 during which he and his team found one of the oldest remains of anatomically modern Homo sapiens. Oldowan tools) finds dating to over millions of years. Paranthropus boisei) and stone tool (e.g. Omo Kibish and the neighboring formations ( Shangura and Usno) have produced a rich paleoanthropological record with many hominin (e.g. The members are numbered in the order in which they were deposited and date between 196 ka ~ 13-4 ka. It is named after the nearby Omo River and is subdivided into four members known as Members I-IV. The Omo Kibish Formation or simply Kibish Formation is a geological formation in the Lower Omo Valley of southwestern Ethiopia.
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