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| AGE OF THE EARLIEST KNOWN HOMINIDS IN JAVA, INDONESIA |
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| Author(s): SWISHER CC, CURTIS GH, JACOB T, GETTY AG, SUPRIJO A |
| Source: SCIENCE Volume: 263 Issue: 5150 Pages: 1118-1121 Published: FEB 25 1994 |
| Times Cited: 202 References: 63 |
| Abstract: Ar-40/Ar-39 laser-incremental heating of hornblende separated from pumice recovered at two hominid sites in Java, Indonesia, has yielded well-defined plateaus with weighted mean ages of 1.81 +/- 0.04 and 1.66 +/- 0.04 million years ago (Ma). The hominid fossils, a juvenile calvaria of Pithecanthropus and a partial face and cranial fragments of Meganthropus, commonly considered part of the Asian Homo erectus hypodigm, are at least 0.6 million years older than fossils referred to as Homo erectus (OH-9) from Olduvai Gorge, Tanzania, and comparable in age with the oldest Koobi Fora Homo cf. erectus (Homo ergaster) in Kenya. These ages lend further credence to the view that Homo erectus may have evolved outside of Africa. If the ancestor of Homo erectus ventured out of Africa before 1.8 Ma, the dispersal would have predated the advent of the Acheulean culture at 1.4 Ma, possibly explaining the absence of these characteristic stone cleavers and hand axes in East Asia. |
| Document Type: Article |
| Language: English |
| Reprint Address: SWISHER, CC (reprint author), INST HUMAN ORIGINS, CTR GEOCHRONOL, 2453 RIDGE RD, BERKELEY, CA 94709 USA |
Addresses:
1. GADJAH MADA UNIV, FAC MED, BIOL & PALEOANTHROPOL LAB, YOGYAKARTA, INDONESIA |
| Publisher: AMER ASSOC ADVANCEMENT SCIENCE, 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 |
| Subject Category: Multidisciplinary Sciences |
| IDS Number: MX759 |
| ISSN: 0036-8075 |
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