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Último Homo erectus de Java: potencial contemporaneidad con el Homo sapiens en el sudeste asiático
C C Swisher1, W J Rink, S C Antón
1Berkeley Geochronology Center, 2455 Ridge Road, Berkeley, CA 94709 USA.
Science (New York, N.Y.)
|December 13, 1996
Resumen
La nueva datación de los fósiles de Homo erectus en Java sugiere que sobrevivieron mucho más tarde de lo que se pensaba anteriormente, lo que podría superponerse con los primeros Homo sapiens en el sudeste asiático.
Área de la Ciencia:
- La paleoantropología es la paleoantropología.
- Geocronología Geocronología.
Sus antecedentes:
- Los fósiles de homínidos Ngandong y Sambungmacan de Java representan los especímenes de Homo erectus más avanzados morfológicamente.
- Las estimaciones de edad anteriores para estos fósiles eran significativamente más antiguas.
Objetivo del estudio:
- Para fechar con precisión los fósiles de Homo erectus de Java Central.
- Reevaluar la línea de tiempo de supervivencia del Homo erectus en el sudeste asiático.
Principales métodos:
- Datamiento por resonancia de espín de electrones (ESR) de dientes fósiles de bovinos.
- La serie U espectrométrica de masas para la datación de los dientes fósiles de bovinos.
Principales resultados:
- Se obtuvieron edades promedio de 27 +/- 2 a 53.3 +/- hace 4 mil años.
- Estas fechas son de 20.000 a 400.000 años más jóvenes que las estimaciones anteriores.
- El Homo erectus en Java puede haber sobrevivido 250.000 años más que en el continente y 1 millón de años más que en África.
Conclusiones:
- El Homo erectus persistió en Java mucho más tarde de lo que se creía.
- Esta supervivencia prolongada plantea la posibilidad de que H. erectus coexistiera con el Homo sapiens en el sudeste asiático.
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