Abstract
Potassium–argon dating of the lavas of Rusinga Island, and a re-investigation of the associated sediments, indicate that most of the vertebrate fossils and nearly all of the early hominoids have come from strata about 18 million years old.
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VAN COUVERING, J., MILLER, J. Miocene Stratigraphy and Age Determinations, Rusinga Island, Kenya. Nature 221, 628–632 (1969). https://doi.org/10.1038/221628a0
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DOI: https://doi.org/10.1038/221628a0
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