Toward the settlement of controversies over the chronology of the early Javanese hominids

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Geochronological research was carried out on the fossil hominid remains from Java, Indonesia. Our results constrains the uppermost age (latest occurrence) of hominid fossils to about 0.79 Ma (million years ago) in the Sangiran area, which has yielded a number of Homo erectus finds and also offers one of the standard Plio-Pleistocene sections in Java. In these days, the idea has become widely accepted that hominids achieved the first colonization into Java earlier than 1.5 Ma. However, the present research fails to support the above "accepted" chronological concept, and strongly suggests that the earliest known remains of the Javanese hominids should not date back far more than 1.0 Ma.