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Las fracturas perimortem en Lucy sugieren mortalidad por caídas de árboles altos
John Kappelman1,2, Richard A Ketcham2, Stephen Pearce3
1Department of Anthropology, The University of Texas at Austin, Austin, Texas 78712, USA.
Nature
|August 30, 2016
Resumen
El fósil del homínido Lucy (Australopithecus afarensis) probablemente murió por una caída de un árbol alto. El análisis de su esqueleto revela fracturas consistentes con un evento de alto impacto, lo que sugiere actividad arbórea.
Área de la Ciencia:
- Paleoantropología
- Biología esquelética
- Paleopatología
Sus antecedentes:
- El fósil de homínido del Plioceno 'Lucy' (Australopithecus afarensis) es un hallazgo significativo para comprender la evolución humana temprana.
- Existe un debate sobre el alcance de la locomoción arbórea en el Australopithecus afarensis.
Objetivo del estudio:
- Para determinar la causa de la muerte del homínido fósil Lucy (Australopithecus afarensis).
- Para investigar la evidencia biomecánica del trauma esquelético en el fósil de Lucy.
Principales métodos:
- Un examen detallado del esqueleto fósil de Lucy.
- Análisis de los patrones de fractura, incluidas las fracturas por compresión y por greenstick.
- Interpretación biomecánica del trauma de impacto.
Principales resultados:
- Las fracturas en múltiples elementos esqueléticos indican un evento de desaceleración vertical o un impacto desde una altura significativa.
- La gravedad de las fracturas sugiere daño concomitante de órganos internos.
- El patrón de la lesión es consistente con una caída, probablemente de un árbol.
Conclusiones:
- Se supone que la muerte de Lucy es el resultado de una caída desde una altura considerable.
- Los hallazgos proporcionan evidencia del arborealismo en el Australopithecus afarensis.
- Este estudio ofrece una nueva perspectiva sobre la vida y muerte de este importante fósil de homínido.
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