Early Pliocene Sediments and Fossils from the Northern Kenya Rift Valley

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Abstract
Mammalian fossils, which include the tooth of an early hominid, have been recovered from the newly mapped Ngorora Formation in the Baringo District. Preliminary dating suggests that this formation is aged between 9 and 12 million years, and the new finds thus help to span a ten million year gap in the fossil mammal record in Africa south of the Sahara.