Dictionary of Human Evolution and Biology

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Hadar Formation

Plio-Pleistocene sedimentary unit consisting of four named members, each with discrete subunits; the main Members are the Basal Member, Sidi Hakoma Member, Denen Dora Member, and Kada Hadar Member. Hominids have been recovered principally from about 40 m above and below a basalt unit in the Sidi Hakoma Member. The sediments of interest contain indications of a paleoenvironment that was primarily lacustrine, with fauna typically found at lake margins.

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